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<rss version="2.0"><channel><title>News: General News</title><link>https://nsaneforums.com/news/general-news/page/126/?d=2</link><description>News: General News</description><language>en</language><item><title>Bill Gates Says &#x2018;Brute Force&#x2019; Climate Policies Won&#x2019;t Work</title><link>https://nsaneforums.com/news/general-news/bill-gates-says-%E2%80%98brute-force%E2%80%99-climate-policies-won%E2%80%99t-work-r18810/</link><description><![CDATA[<p>
	<span style="font-size:22px;">Speaking at a live event at The Times Center in New York, the billionaire philanthropist argued for a pragmatic, technology-driven approach to global warming.</span>
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<p>
	Bill Gates, the multibillionaire founder of Microsoft, argued for a pragmatic, technology-driven approach to fighting climate change on Thursday.
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<p>
	“If you try to do climate brute force, you will get people who say, ‘I like climate but I don’t want to bear that cost and reduce my standard of living,’” Mr. Gates said at the Climate Forward event hosted by The New York Times. “Without innovation, it’s unlikely, particularly in middle-income countries, that the brute force approach will be successful.”
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	Mr. Gates also said winning more bipartisan support was needed in order for policy to actually stick. “Republicans for climate change action are gold, you know,” he said. “That’s got to be a number that somehow we manage to increase over time.”
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	“You can’t have a climate policy that when one party is in charge goes full speed ahead and stops cold,” he added. “These are 30-year investments in steel factories, new ways of making meat.”
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	Mr. Gates, who in recent weeks has espoused an everything-will-be-fine approach to the climate crisis, was asked whether he could reconcile that stance with the reality of extreme weather around the globe.
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	“I’m the person who is doing the most on climate in terms of the innovation and how we can square multiple goals,” said Mr. Gates, a co-founder of the Bill and Melinda Gates Foundation, a major donor to health- and climate-related causes. “There’s very limited money for causes to reduce inequity in the world. And no temperate country is going to become uninhabitable.”
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	Instead, he said, he is taking a more pragmatic approach and drawing a line at untested remedies like planting a trillion trees.
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	“Are we the science people or are we the idiots?” he said. “Which one do we want to be?”
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	<strong><a href="https://www.nytimes.com/2023/09/21/climate/bill-gates-climate-policy.html" rel="external nofollow">Source</a></strong>
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]]></description><guid isPermaLink="false">18810</guid><pubDate>Fri, 22 Sep 2023 02:36:09 +0000</pubDate></item><item><title>Australian-developed blood cancer treatment approved by FDA</title><link>https://nsaneforums.com/news/general-news/australian-developed-blood-cancer-treatment-approved-by-fda-r18809/</link><description><![CDATA[<p>
	The US FDA has approved GSK’s cancer drug Ojjaara (momelotinib) for the treatment of intermediate or high-risk myelofibrosis, including primary myelofibrosis or secondary myelofibrosis (post-polycythaemia vera and post-essential thrombocythaemia), in adults with anaemia. To date, it is the only approved medicine for both newly diagnosed and previously treated myelofibrosis patients with anaemia that addresses the key manifestations of the disease.
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	Myelofibrosis is a rare bone marrow blood cancer that can lead to severely low blood counts, including anaemia and thrombocytopaenia; constitutional symptoms such as fatigue, night sweats and bone pain; and splenomegaly (enlarged spleen). About 40% of patients have moderate to severe anaemia at the time of diagnosis, and nearly all patients are estimated to develop anaemia over the course of the disease. Myelofibrosis patients with anaemia often require transfusions and more than 30% will discontinue treatment due to anaemia. Patients who are transfusion dependent thus have a poor prognosis and shortened survival.
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	Ojjaara is an oral drug with a differentiated mechanism of action, featuring inhibitory ability along three key signalling pathways: Janus kinase (JAK) 1, JAK2 and activin A receptor, type I (ACVR1). Inhibition of JAK1 and JAK2 may improve constitutional symptoms and splenomegaly. Additionally, inhibition of ACVR1 leads to a decrease in circulating hepcidin, which is elevated in myelofibrosis and contributes to anaemia.
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	The FDA approval of momelotinib is supported by data from the pivotal MOMENTUM study and a subpopulation of adult patients with anaemia from the SIMPLIFY-1 phase III trial. MOMENTUM was designed to evaluate the safety and efficacy of momelotinib versus danazol for the treatment and reduction of key manifestations of myelofibrosis in an anaemic, symptomatic, JAK inhibitor-experienced population. The trial met all its primary and key secondary endpoints, demonstrating statistically significant response with respect to constitutional symptoms, splenic response and transfusion independence. SIMPLIFY-1 was designed to evaluate the efficacy and safety of momelotinib versus ruxolitinib in myelofibrosis patients who had not received a prior JAK-inhibitor therapy. Safety and efficacy results for SIMPLIFY-1 were based upon a subset of patients with anaemia.
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	“We are proud to add Ojjaara to our oncology portfolio and address a significant medical need in the community,” said Nina Mojas, Senior Vice President, Oncology Global Product Strategy at GSK. “We look forward to helping improve outcomes in this difficult-to-treat blood cancer.”
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	Momelotinib was originally invented at Cytopia, an Australian biotech founded in 1999 by Professor Andrew Wilks. The drug was the only asset of Sierra Oncology, which was ultimately acquired by GSK in 2022 for US$1.9 billion in an all-cash deal, making it the highest known acquisition amount paid for a drug invented in Australia.
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<p>
	According to Wilks, FDA approval for momelotinib is not only a personal victory but a triumph for the many scientists and clinicians with whom he worked across Australia. The molecule also has the potential to gain additional approvals for treating a number of inflammatory diseases, Wilks claims.
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	<strong><a href="https://www.labonline.com.au/content/life-scientist/news/australian-developed-blood-cancer-treatment-approved-by-fda-399422275" rel="external nofollow">Source</a></strong>
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]]></description><guid isPermaLink="false">18809</guid><pubDate>Fri, 22 Sep 2023 02:31:42 +0000</pubDate></item><item><title>Too much screen time at young age linked to higher likelihood of developmental delays, study finds</title><link>https://nsaneforums.com/news/general-news/too-much-screen-time-at-young-age-linked-to-higher-likelihood-of-developmental-delays-study-finds-r18808/</link><description><![CDATA[<p>
	<span style="font-size:22px;">Scientists found the more electronics babies were given, the more likely they were to exhibit developmental delays.</span>
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	Giving your phone or tablet to very young children to keep them occupied may seem like a good idea at the time, but experts advise looking for other ways to calm your kids. A study found that early screen use can have long-term negative effects.
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	Judging those who give young kids phones or tablets is easy when you're not a parent.
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	"You see people doing that and you're like, 'I'm never going to do that. I'm not going to be that kind of parent,'" said Chantall Dodd-Sanchez of San Jacinto.
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	As a new mom, it can be hard to stick to ideals.
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	"You're like, 'Oh my gosh! I need a little extra help,'" she said.
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	But new research finds too much help from screens could have detrimental effects. Researchers in Japan asked the parents of 8,000 babies to log digital usage.
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	"The study was very powerful, and it was a large group of individuals being followed across time," said Dr. Evita Limon-Rocha, a child psychologist with Kaiser Permanente Riverside Medical Center.
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	A study in JAMA pediatrics compared the hours of screen time usage up to age 1 to developmental delays at ages 2 and 4.
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	Limon-Rocha said babies exposed to four hours a day fared the worst.
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	"There were difficulties with problem solving and communication," she said.
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	Scientists found the more electronics babies were given, the more likely they were to exhibit developmental delays. Limon-Rocha says the study shows the value of face-to-face interaction and how it conveys language and meaning.
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	"We learn a lot when we're interacting with each other. They're learning a lot in terms of facial expression," she said.
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	The good news? Limon-Rocha said some developmental delays can be reversed. Talk to your pediatrician if you notice any. The research didn't distinguish between educational versus entertainment videos.
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	Dodd-Sanchez puts strict limits on her son's screen time, always looks for engaging content and interacts with him.
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	"He's not just sitting there and just zoning out like a little zombie," Dodd-Sanchez said.
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	Except for video chatting, the American Academy of Pediatrics calls for no screen time for kids 18 to 24 months. For kids 2 to 5 years old, the recommendation is an hour or less. But doctors said don't feel bad if every now and then you need a digital time out.
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	"Life is busy. Life is hectic. This is new information to give us more tools for parents to make the best decisions that make the most sense for their individual families," said Limon-Rocha.
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</p>

<p>
	<strong><a href="https://abc7news.com/screen-time-for-young-kids-how-much-developmental-delays-study/13806557/" rel="external nofollow">Source</a></strong>
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]]></description><guid isPermaLink="false">18808</guid><pubDate>Fri, 22 Sep 2023 02:20:19 +0000</pubDate></item><item><title>In a first, RNA is recovered from extinct Tasmanian tiger</title><link>https://nsaneforums.com/news/general-news/in-a-first-rna-is-recovered-from-extinct-tasmanian-tiger-r18807/</link><description><![CDATA[<p>
	Sept 19 (Reuters) - The Tasmanian tiger, a dog-sized striped carnivorous marsupial also called the thylacine, once roamed the Australian continent and adjacent islands, an apex predator that hunted kangaroos and other prey. Because of humans, the species is now extinct.
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<p>
	But that does not mean scientists have stopped learning about it. In a scientific first, researchers said on Tuesday they have recovered RNA - genetic material present in all living cells that has structural similarities to DNA - from the desiccated skin and muscle of a Tasmanian tiger stored since 1891 at a museum in Stockholm.
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	Scientists in recent years have extracted DNA from ancient animals and plants, some of it upwards of 2 million years old. But this study marked the first time that RNA - much less stable than DNA - has been recovered from an extinct species.
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	While not the focus of this research, the ability to extract, sequence and analyze old RNA could boost efforts by other scientists toward recreating extinct species. Recovering RNA from old viruses also could help decipher the cause of past pandemics.
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	DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) - biomolecular cousins - are fundamental molecules in cell biology.
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	DNA is a double-stranded molecule that contains an organism's genetic code, carrying the genes that give rise to all living things. RNA is a single-stranded molecule that carries genetic information it receives from the DNA, putting this information into practice. RNA synthesizes the panoply of proteins that an organism requires to live and works to regulate cell metabolism.
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	"RNA sequencing gives you a taste of the real biology and metabolism regulation that was happening in the cells and tissues of the Tasmanian tigers before they went extinct," said geneticist and bioinformatician Emilio Mármol Sánchez of the Centre for Palaeogenetics and SciLifeLab in Sweden, lead author of the study published in the journal Genome Research.
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	"If we want to understand extinct species, we need to understand what gene complements they have and also what the genes were doing and which were active," said geneticist and study co-author Marc Friedländer of Stockholm University and SciLifeLab.
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	There were questions about how long RNA could survive in the type of conditions - room temperature in a cupboard - that these remains had been stored. The remains at the Swedish Natural History Museum were in a state of semi-mummification, with skin, muscles and bones preserved but internal organs lost.
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	"Most researchers have thought that RNA would only survive for a very short time - like days or weeks - at room temperature. This is likely true when samples are wet or moist, but apparently not the case when they are dried," said evolutionary geneticist Love Dalén of the Centre for Palaeogenetics.
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	The Tasmanian tiger resembled a wolf, aside from the tiger-like stripes on its back. The arrival of people in Australia roughly 50,000 years ago ushered in massive population losses. The 18th century arrival of European colonizers spelled doom for the remaining populations concentrated on the island of Tasmania, with a bounty later put on them after they were declared a hazard to livestock. The last-known Tasmanian tiger succumbed in a Tasmanian zoo in 1936.
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	"The story of the thylacine's demise is in a sense one of the most well-documented and proven human-driven extinction events. Sadly, Tasmanian tigers were declared as protected just two months before the last-known individual died in captivity, too late for saving them from extinction," Mármol said.
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	Private "de-extinction" initiatives have been launched aimed at resurrecting certain extinct species such as the Tasmanian tiger, dodo or woolly mammoth.
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	"Although we remain skeptical about the possibility of actually recreating an extinct species using gene editing on living extant animal relatives - and the time-scale to get to a final point might be underestimated - we do advocate for more research on the biology of these extinct animals," Mármol said.
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<p>
	<strong><a href="https://www.reuters.com/science/first-rna-is-recovered-extinct-tasmanian-tiger-2023-09-19/" rel="external nofollow">Source</a></strong>
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<p>
	Also:  <em><a href="https://www.sciencenews.org/article/first-time-decode-rna-extinct-animal-tasmanian" rel="external nofollow">For the first time, researchers decoded the RNA of an extinct animal.</a></em>
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]]></description><guid isPermaLink="false">18807</guid><pubDate>Fri, 22 Sep 2023 02:08:22 +0000</pubDate></item><item><title>Consciousness theory slammed as &#x2018;pseudoscience&#x2019; &#x2014; sparking uproar</title><link>https://nsaneforums.com/news/general-news/consciousness-theory-slammed-as-%E2%80%98pseudoscience%E2%80%99-%E2%80%94-sparking-uproar-r18806/</link><description><![CDATA[<p>
	<span style="font-size:22px;">Researchers publicly call out theory that they say is not well supported by science, but that gets undue attention.</span>
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	A letter, signed by 124 scholars and posted online last week1, has caused an uproar in the consciousness research community. It claims that a prominent theory describing what makes someone or something conscious — called the integrated information theory (IIT) — should be labelled “pseudoscience”. Since its publication on 15 September in the preprint repository PsyArXiv, the letter has some researchers arguing over the label and others worried it will increase polarization in a field that has grappled with issues of credibility in the past.
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	“I think it’s inflammatory to describe IIT as pseudoscience,” says neuroscientist Anil Seth, director of the Centre for Consciousness Science at the University of Sussex near Brighton, UK, adding that he disagrees with the label. “IIT is a theory, of course, and therefore may be empirically wrong,” says neuroscientist Christof Koch, a meritorious investigator at the Allen Institute for Brain Science in Seattle, Washington, and a proponent of the theory. But he says that it makes its assumptions — for example, that consciousness has a physical basis and can be mathematically measured — very clear.
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<p>
	There are dozens of theories that seek to understand consciousness — everything that a human or non-human experiences, including what they feel, see and hear — as well as its underlying neural foundations. IIT has often been described as one of the central theories, alongside others, such as global neuronal workspace theory (GNW), higher-order thought theory and recurrent processing theory. It proposes that consciousness emerges from the way information is processed within a ‘system’ (for instance, networks of neurons or computer circuits), and that systems that are more interconnected, or integrated, have higher levels of consciousness.
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	<span style="font-size:22px;"><strong>A growing discomfort</strong></span>
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	<br />
	Hakwan Lau, a neuroscientist at Riken Center for Brain Science in Wako, Japan, and one of the authors of the letter, says that some researchers in the consciousness field are uncomfortable with what they perceive as a discrepancy between IIT’s scientific merit and the considerable attention it receives from the popular media because of how it is promoted by advocates. “Has IIT become a leading theory because of academic acceptance first, or is it because of the popular noise that kind of forced the academics to give it acknowledgement?”, Lau asks.
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<p>
	Negative feelings towards the theory intensified after it captured headlines in June. Media outlets, including Nature, reported the results of an ‘adversarial’ study that pitted IIT and GNW against one another. The experiments, which included brain scans, didn’t prove or completely disprove either theory, but some researchers found it problematic that IIT was highlighted as a leading theory of consciousness, prompting Lau and his co-authors to draft their letter.
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<p>
	 
</p>

<p>
	But why label IIT as pseudoscience? Although the letter doesn’t clearly define pseudoscience, Lau notes that a “commonsensical definition” is that pseudoscience refers to “something that is not very scientifically supported, that masquerades as if it is already very scientifically established”. In this sense, he thinks that IIT fits the bill.
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	<span style="font-size:22px;"><strong>Is it testable?</strong></span>
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	<br />
	Additionally, Lau says, some of his co-authors think that it’s not possible to empirically test IIT’s core assumptions, which they argue contributes to the theory’s status as pseudoscience.
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<p>
	Seth, who is not a proponent of IIT, although he has worked on related ideas in the past, disagrees. “The core claims are harder to test than other theories because it’s a more ambitious theory,” he says. But there are some predictions stemming from the theory, about neural activity associated with consciousness, for instance, that can be tested, he adds. A 2022 review found 101 empirical studies involving IIT2.
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<p>
	Liad Mudrik, a neuroscientist at Tel Aviv University, in Israel, who co-led the adversarial study of IIT versus GNW, also defends IIT’s testability at the neural level. “Not only did we test it, we managed to falsify one of its predictions,” she says. “I think many people in the field don’t like IIT, and this is completely fine. Yet it is not clear to me what is the basis for claiming that it is not one of the leading theories.”
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	The same criticism about a lack of meaningful empirical tests could be made about other theories of consciousness, says Erik Hoel, a neuroscientist and writer who lives on Cape Cod, in Massachusetts, and who is a former student of Giulio Tononi, a neuroscientist at the University of Wisconsin-Madison who is a proponent of IIT. “Everyone who works in the field has to acknowledge that we don’t have perfect brain scans,” he says. “And yet, somehow, IIT is singled out in the letter as this being a problem that’s unique to it.”
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	<span style="font-size:22px;"><strong>Damaging effect</strong></span>
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<p>
	<br />
	Lau says he doesn’t expect a consensus on the topic. “But I think if it is known that, let’s say, a significant minority of us are willing to [sign our names] that we think it is pseudoscience, knowing that some people may disagree, that’s still a good message.” He hopes that the letter reaches young researchers, policymakers, journal editors and funders. “All of them right now are very easily swayed by the media narrative.”
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<p>
	Mudrik, who emphasizes that she deeply respects the people who signed the letter, some of whom are close collaborators and friends, says that she worries about the effect it will have on the way the consciousness field is perceived. “Consciousness research has been struggling with scepticism from its inception, trying to establish itself as a legitimate scientific field,” she says. “In my opinion, the way to fight such scepticism is by conducting excellent and rigorous research”, rather than by publicly calling out certain people and ideas.
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	Hoel fears that the letter might discourage the development of other ambitious theories. “The most important thing for me is that we don’t make our hypotheses small and banal in order to avoid being tarred with the pseudoscience label.”
</p>

<p>
	 
</p>

<p>
	<em>doi: <a href="https://doi.org/10.1038/d41586-023-02971-1" rel="external nofollow">https://doi.org/10.1038/d41586-023-02971-1</a></em>
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</p>

<p>
	<span style="font-size:22px;"><strong>References</strong></span>
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<p>
	 
</p>

<p>
	<strong>1. </strong> Fleming, S. et al. Preprint at PsyArXiv <a href="https://doi.org/10.31234/osf.io/zsr78" rel="external nofollow"><span style="color:#2980b9;">https://doi.org/10.31234/osf.io/zsr78</span></a> (2023).
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<p>
	<strong>2.</strong>  Yaron, I. <em>et al. Nature Human Behav. 6, 593–604 </em>(2022).
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</p>

<p>
	<strong><a href="https://www.nature.com/articles/d41586-023-02971-1" rel="external nofollow">Source</a></strong>
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</p>
]]></description><guid isPermaLink="false">18806</guid><pubDate>Fri, 22 Sep 2023 02:05:36 +0000</pubDate></item><item><title>Wine&#x2019;s True Origins Are Finally Revealed</title><link>https://nsaneforums.com/news/general-news/wine%E2%80%99s-true-origins-are-finally-revealed-r18805/</link><description><![CDATA[<p>
	<span style="font-size:22px;">A broad genetic study has revised the prevailing narrative about how wine grapes spread around the world</span>
</p>

<p>
	 
</p>

<p>
	With just a sniff and a sip, trained sommeliers can often tell what region a wine came from: Douro in Portugal, Barossa in Australia, Napa or Sonoma in California. Experts in a specific locale can name the hillside—even how far up the hill—where a wine's grapes were grown because of the terroir, the combination of soil, topography and microclimate that imparts a characteristic taste. The geographic and genetic journeys that brought those grapes to those places, however, have been poorly understood.
</p>

<p>
	 
</p>

<p>
	A massive new study gives us the clearest picture yet of the prehistory of wine, overturning several commonly accepted narratives about when and where humans cultivated grapevines to make the world's wines. A large international group of researchers collected and analyzed 2,503 unique vines from domesticated table and wine grapes and 1,022 wild grapevines. By extracting DNA from the vines and determining the patterns of genetic variations among them, they found some surprises.
</p>

<p>
	 
</p>

<p>
	For centuries grape growers in different communities passed down lore about where their grapes came from. Some governments, particularly in Europe, designated appellations—strictly circumscribed regions with rules on how and where a varietal such as burgundy, rioja or barolo was legally allowed to grow and be produced. But genetic studies to discover where vines originated thousands of years ago began in earnest only 10 or 15 years ago.
</p>

<p>
	 
</p>

<p style="text-align:center;">
	<img alt="C09DFB94-946C-4452-88EC78075E2FD9D2_medi" class="ipsImage" data-ratio="75.10" height="540" width="360" src="https://static.scientificamerican.com/sciam/cache/file/C09DFB94-946C-4452-88EC78075E2FD9D2_medium.jpg?cacheID=270B0CE8-9B1C-43E1-A1BA64FB12EBDEA8" />
</p>

<p style="text-align:center;">
	<span style="font-size:12px;"><em>Primitivo grapes are harvested in Puglia, one of Italy’s famous wine regions. Credit: Cosimo Calabrese/Getty Images</em></span>
</p>

<p style="text-align:center;">
	 
</p>

<p>
	One theme that emerged from these studies was that wild grapes grew in central Asia and dispersed westward as early humans migrated in that direction. But the genetic data in the huge study correct this story, says Wei Chen, a senior research scientist at Yunnan Agricultural University in China and one of the study's leaders. Genetic data indicate that 400,000 and 300,000 years ago grapes grew naturally across the western and central Eurasian continent. Roughly 200,000 years ago a cold, dry, ice-age climate slowly killed off vines in the central Mediterranean Sea region, cleaving vine habitat into two isolated areas: one to the west of the sea (today Portugal, Spain and France) and one to the east (roughly Israel, Syria, Turkey and Georgia). Around 56,000 years ago the eastern region separated again into smaller isolated areas: the Caucasus (Georgia, Armenia and Azerbaijan) and western Asia (Israel, Jordon and Iraq).
</p>

<p>
	 
</p>

<p>
	Until recently, researchers also thought humans domesticated grapevines from wild progenitors as long as 8,000 years ago as an early agricultural revolution spread across what is now western Asia and Europe. Some experts thought vines were first cultivated in Iberia (primarily Portugal and Spain) around 3,000 years ago. Other investigators thought domestication first happened in the Caucasus. To make matters murkier (not a good trait in wine), there was disagreement on whether grapes were used first for food (“table grapes”) or for fermentation.
</p>

<p>
	 
</p>

<p>
	The recent study settles this debate: humans in western Asia domesticated table grapes around 11,000 years ago. Other people, in the Caucasus, domesticated wine grapes around the same time— although they probably didn't master winemaking for another 2,000 or 3,000 years.
</p>

<p>
	 
</p>

<p>
	Early farmers, the revised story goes, migrated from western Asia toward Iberia and brought table vines with them. Along the way the farmers crossbred the table vines with local wild grapevines. The earliest crossbreeding probably happened in what is now Israel and Turkey, creating muscat grapes, which are high in sugar—good for eating and fermenting. Gradually the table grape was genetically transformed into different wine grapes in the Balkans, Italy, France and Spain.
</p>

<p>
	 
</p>

<p>
	But if people in the Caucasus already had wine grapes, why didn't they bring them to Europe? “We just don't know yet,” Chen says. People migrating from there—notably Yamnaya nomads 4,000 to 5,000 years ago—might have brought vines, but the genetic analysis shows that Caucasus grapes have had very little influence on the makeup of European wine grapes.
</p>

<p>
	 
</p>

<p>
	Once farmers did begin cultivating wine grapes in Europe, they developed many of the varietals we enjoy today. Some grapes, such as cabernet sauvignon, have the same name everywhere they are grown. Other varietals farmed in different regions took on different names even though the grapes are genetically identical, such as zinfandel and primitivo. Sadly, it is almost impossible to trace a current varietal back to western Asia or the Caucasus, the two early domestication centers. Over the centuries grape growers crossbred table and wine grapes, as well as domesticated and wild grapes, and even back bred offspring with parents. “Once they had a superior vine, they usually destroyed the prior vines,” Chen says, making it hard to construct a family tree. You may never know where your favorite wine came from—really came from. In that sense, the mystique lives on.
</p>

<p>
	 
</p>

<p style="text-align:center;">
	<img alt="saw1023Fisch3111a_d.png" class="ipsImage" data-ratio="75.10" height="540" width="281" src="https://static.scientificamerican.com/sciam/assets/Image/2023/saw1023Fisch3111a_d.png" />
</p>

<p style="text-align:center;">
	<span style="font-size:12px;"><em>Credit: Francesco Franchi; Source: “Dual Domestications and Origin of Traits in Grapevine Evolution,” by Yang Dong et al., in Science, Vol. 379; March 2023 (data); Consultant: Wei Chen/Yunnan Agricultural University</em></span>
</p>

<p style="text-align:center;">
	 
</p>

<p style="text-align:center;">
	<img alt="saw1023Fisch31bb_d.png" class="ipsImage" data-ratio="75.10" height="540" width="206" src="https://static.scientificamerican.com/sciam/assets/Image/2023/saw1023Fisch31bb_d.png" />
</p>

<p style="text-align:center;">
	<span style="font-size:12px;"><em>Credit: Francesco Franchi; Source: “Dual Domestications and Origin of Traits in Grapevine Evolution,” by Yang Dong et al., in Science, Vol. 379; March 2023 (data); Consultant: Wei Chen/Yunnan Agricultural University</em></span>
</p>

<p style="text-align:center;">
	 
</p>

<p style="text-align:center;">
	<img alt="saw1023Fisch31c_d.jpg" class="ipsImage" data-ratio="75.10" height="540" width="549" src="https://static.scientificamerican.com/sciam/assets/Image/2023/saw1023Fisch31c_d.jpg" />
</p>

<p style="text-align:center;">
	<span style="font-size:12px;"><em>Credit: Francesco Franchi; Source: “Dual Domestications and Origin of Traits in Grapevine Evolution,” by Yang Dong et al., in Science, Vol. 379; March 2023 (data); Consultant: Wei Chen/Yunnan Agricultural University</em></span>
</p>

<p>
	 
</p>

<p>
	<em><span style="color:#7f8c8d;">This article was originally published with the title "Wine's True Origins" in Scientific American 329, 3, 38-43 (October 2023)</span></em>
</p>

<p>
	<em><span style="color:#7f8c8d;">doi:10.1038/scientificamerican1023-38</span></em>
</p>

<p>
	 
</p>

<p>
	<strong><a href="https://www.scientificamerican.com/article/wines-true-origins-are-finally-revealed/" rel="external nofollow">Source</a></strong>
</p>
]]></description><guid isPermaLink="false">18805</guid><pubDate>Fri, 22 Sep 2023 01:58:04 +0000</pubDate></item><item><title>How much stuff does it take to not be poor? About 6 tons per year</title><link>https://nsaneforums.com/news/general-news/how-much-stuff-does-it-take-to-not-be-poor-about-6-tons-per-year-r18804/</link><description><![CDATA[<p>
	<span style="font-size:22px;">That’s the average amount of food, fuel, clothing, and other supplies per person, researchers calculate in first-of-its-kind study</span>
</p>

<p>
	 
</p>

<p>
	How much stuff do people need to lead a decent life? It’s a hard, and subjective, question. But researchers have now estimated for the first time what it takes, quantitatively speaking, to keep one person out of abject poverty: about 6 tons per year of food, fuel, clothing, and other supplies, researchers report this month in Environmental Science &amp; Technology.
</p>

<p>
	 
</p>

<p>
	The first-of-its-kind estimate is “a remarkable step forward,” says Stefan Bringezu, an expert in sustainable resource management at the University of Kassel who was not involved with the research. “They shed light on the physical basis of our society and economy in a comprehensive and rather detailed way.” According to Bringezu, the findings contain good news: They suggest that ending poverty can be done without taking an unbearable toll on the planet itself.
</p>

<p>
	 
</p>

<p>
	The study comes as the United Nations wrestled this week with exactly that daunting challenge. The U.N. is trying to kick-start progress on its Sustainable Development Goals, a set of 17 grand ambitions that include ending poverty worldwide by 2030, while also preventing environmental degradation and fighting climate change. Fossil fuels get a lot of attention in this debate, but raw materials such as cement, metal, timber, and grain are also important because their production and refining contributes about 23% of carbon emissions and more than 90% of biodiversity loss.
</p>

<p>
	 
</p>

<p>
	To make the new estimates, environmental scientists Johan Andrés Vélez-Henao and Stefan Pauliuk of the University of Freiburg and colleagues turned to a common definition of basic living standards created in 2017. The list includes 15 square meters of living space, 2100 calories of food per day for adults, basic appliances such as a washing machine and a modern stove, a phone and laptop, and the means to travel to work or sell their wares.
</p>

<p>
	 
</p>

<p>
	The researchers calculated the rough amount of raw materials involved in each of these objects and services. From a societal perspective, they looked at two kinds of needs for materials, because they have different implications. The first is very large and essentially one-time investments, such as buying a house. The other is analogous to the ongoing maintenance costs to prevent it from falling into ruin.
</p>

<p>
	 
</p>

<p>
	The former challenge is large, because ending poverty requires a lot of basic infrastructure, such as building all the needed houses, schools, and roads that allow farmers and villagers to take their wares to market. And building hospitals, for example, that can treat the urban poor. It also includes manufacturing the construction equipment needed for those jobs. All told, these structures require about 43 tons of materials—technically called an “in-use stock”—for each person in currently living in poverty, or 51.6 billion tons of raw materials worldwide.
</p>

<p>
	 
</p>

<p>
	The second task is enabling poor people to maintain their share of these stocks and to meet daily needs for household life, education, work, and participating in public life, such as recreation. Figuring this amount required more detailed calculations. For food, the total included the biomass of crops as well as the fertilizer and pesticides needed to grow them. Estimating transportation needs involved a mix of modes, including bicycles, cars, buses, and trains, because the goal was a global average.
</p>

<p>
	 
</p>

<p>
	Maintaining minimum decent living conditions for all 1.2 billion people currently living in abject poverty would take 7.2 billion tons of raw materials per year, the researchers found—or about 6 tons per person every year.
</p>

<p>
	 
</p>

<p>
	How much is that, actually? This is the question that researchers and policymakers want to answer because providing all the raw materials to end poverty will cost money, require plans, and take a toll on the environment.
</p>

<p>
	 
</p>

<p>
	One key takeaway, Vélez-Henao and Pauliuk say, is that this new estimate is achievable without ruining the planet. The duo notes that the average ongoing amount of stuff is within the range—between 8 and 14 tons per year—of what previous studies have suggested would be sustainable.
</p>

<p>
	 
</p>

<p>
	Here's the catch: These studies assume that every person on the planet eventually consumes roughly the same amount of raw materials. So, in terms of what Earth can safely provide, using raw materials to provide a vibrant and comfortable life is a zero-sum game.
</p>

<p>
	 
</p>

<p>
	And rich countries already use a lot of raw materials. Take the United States and Germany, for example. To maintain their lifestyles, people in these countries require more than 70 tons of raw materials every year per capita—a much bigger share than the 8 to 14 tons per capita for everyone on the planet to have just and sustainable living standards. “This shows you that inequality reduction is so critical” for achieving the U.N.’s Sustainable Development Goals, says Narasimha Rao, an expert in energy and poverty at Yale University.
</p>

<p>
	 
</p>

<p>
	In addition to lessening the gap, progress can also come from achieving greater efficiency, such as lighter vehicles and more durable products. And the new analysis shows that lifestyle changes—for example, cutting one’s meat consumption in half or taking public transportation—can decrease a person’s material footprint by 9% and 10%, respectively. “You really get a different picture,” Vélez-Henao says. “That impressed me a lot.”
</p>

<p>
	 
</p>

<p>
	<span style="color:#7f8c8d;">doi: 10.1126/science.adk9666</span>
</p>

<p>
	 
</p>

<p>
	<strong><a href="https://www.science.org/content/article/how-much-stuff-does-it-take-not-be-poor-about-6-tons-year" rel="external nofollow">Source</a></strong>
</p>
]]></description><guid isPermaLink="false">18804</guid><pubDate>Fri, 22 Sep 2023 01:50:56 +0000</pubDate></item><item><title>The Opposite of D&#xE9;j&#xE0; Vu Exists, And It's Even More Uncanny</title><link>https://nsaneforums.com/news/general-news/the-opposite-of-d%C3%A9j%C3%A0-vu-exists-and-its-even-more-uncanny-r18802/</link><description><![CDATA[<p>
	Repetition has a strange relationship with the mind. Take the experience of déjà vu, when we wrongly believe have experienced a novel situation in the past – leaving you with an spooky sense of pastness.
</p>

<p>
	 
</p>

<p>
	But we have discovered that déjà vu is actually a window into the workings of our memory system.
</p>

<p>
	 
</p>

<p>
	Our research found that the phenomenon arises when the part of the brain which detects familiarity de-synchronises with reality. Déjà vu is the signal which alerts you to this weirdness: it is a type of "fact checking" for the memory system.
</p>

<p>
	 
</p>

<p>
	But repetition can do something even more uncanny and unusual.
</p>

<p>
	 
</p>

<p>
	The opposite of déjà vu is "jamais vu", when something you know to be familiar feels unreal or novel in some way. In our recent research, which has just won an Ig Nobel award for literature, we investigated the mechanism behind the phenomenon.
</p>

<p>
	 
</p>

<p>
	Jamais vu may involve looking at a familiar face and finding it suddenly unusual or unknown. Musicians have it momentarily – losing their way in a very familiar passage of music. You may have had it going to a familiar place and becoming disorientated or seeing it with "new eyes".
</p>

<p>
	 
</p>

<p>
	It's an experience which is even rarer than déjà vu and perhaps even more unusual and unsettling. When you ask people to describe it in questionnaires about experiences in daily life they give accounts like: "While writing in my exams, I write a word correctly like 'appetite' but I keep looking at the word over and over again because I have second thoughts that it might be wrong."
</p>

<p>
	 
</p>

<p>
	In daily life, it can be provoked by repetition or staring, but it needn't be. One of us, Akira, has had it driving on the motorway, necessitating that he pull over onto the hard shoulder to allow his unfamiliarity with the pedals and the steering wheel to "reset". Thankfully, in the wild, it's rare.
</p>

<p>
	 
</p>

<p>
	<span style="font-size:22px;"><strong>Simple set up</strong></span>
</p>

<p>
	<br />
	We don't know much about jamais vu. But we guessed it would be pretty easy to induce in the laboratory. If you just ask someone to repeat something over and over, they often find it becomes meaningless and confusing.
</p>

<p>
	 
</p>

<p>
	This was the basic design of our experiments on jamais vu. In a first experiment, 94 undergraduates spent their time repeatedly writing the same word. They did it with twelve different words which ranged from the commonplace, such as "door", to less common, such as "sward".
</p>

<p>
	 
</p>

<p>
	We asked participants to copy out the word as quickly as possible, but told them they were allowed to stop, and gave them a few reasons why they might stop including feeling peculiar, being bored or their hand hurting.
</p>

<p>
	 
</p>

<p>
	Stopping because things began to feel strange was the most common option chosen, with about 70% stopping at least once for feeling something we defined as jamais vu. This usually occured after about one minute (33 repetitions) – and typically for familiar words.
</p>

<p>
	 
</p>

<p>
	In a second experiment we used only the word "the", figuring that it was the most common. This time, 55% of people stopped writing for reasons consistent with our definition of jamais vu (but after 27 repetitions).
</p>

<p>
	 
</p>

<p>
	People described their experiences as ranging from "They lose their meaning the more you look at them" to "seemed to lose control of hand" and our favourite "it doesn't seem right, almost looks like it's not really a word but someone's tricked me into thinking it is."
</p>

<p>
	 
</p>

<p style="text-align:center;">
	<img alt="file-20230914-9125-llzb2a.jpg?ixlib=rb-1" class="ipsImage" data-ratio="90.15" height="540" width="540" src="https://images.theconversation.com/files/548389/original/file-20230914-9125-llzb2a.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=600&amp;fit=crop&amp;dpr=1" />
</p>

<p style="text-align:center;">
	<span style="font-size:12px;"><em>Try writing 'the' 33 times. (Christopher Moulin, CC BY)</em></span>
</p>

<p style="text-align:center;">
	 
</p>

<p>
	It took us around 15 years to write up and publish this scientific work. In 2003, we were acting on a hunch that people would feel weird while repeatedly writing a word. One of us, Chris, had noticed that the lines he had been asked to repeatedly write as a punishment at secondary school made him feel strange – as if it weren't real.
</p>

<p>
	 
</p>

<p>
	It took 15 years because we weren't as clever as we thought we were. It wasn't the novelty that we thought it was. In 1907, one of psychology's unsung founding figures, Margaret Floy Washburn, published an experiment with one of her students which showed the "loss of associative power" in words that were stared at for three minutes. The words became strange, lost their meaning and became fragmented over time.
</p>

<p>
	 
</p>

<p>
	We had reinvented the wheel. Such introspective methods and investigations had simply fallen out of favour in psychology.
</p>

<p>
	 
</p>

<p>
	<span style="font-size:22px;"><strong>Deeper insights</strong></span>
</p>

<p>
	<br />
	Our unique contribution is the idea that transformations and losses of meaning in repetition are accompanied by a particular feeling – jamais vu.
</p>

<p>
	Jamais vu is a signal to you that something has become too automatic, too fluent, too repetitive. It helps us "snap out" of our current processing, and the feeling of unreality is in fact a reality check.
</p>

<p>
	 
</p>

<p>
	It makes sense that this has to happen. Our cognitive systems must stay flexible, allowing us to direct our attention to wherever is needed rather than getting lost in repetitive tasks for too long.
</p>

<p>
	 
</p>

<p>
	We are only beginning to understand jamais vu. The main scientific account is of "satiation" – the overloading of a representation until it becomes nonsensical.
</p>

<p>
	 
</p>

<p>
	Related ideas include the "verbal transformation effect" whereby repeating a word over and over activates so-called neighbours so that you start off listening to the looped word "tress" over and over, but then listeners report hearing "dress," "stress," or "florist".
</p>

<p>
	 
</p>

<p>
	It also seems related to research into obsessive compulsive disorder (OCD), which looked at the effect of compulsively staring at objects, such as lit gas rings. Like repeatedly writing, the effects are strange and mean that reality begins to slip, but this might help us understand and treat OCD.
</p>

<p>
	 
</p>

<p>
	If repeatedly checking the door is locked makes the task meaningless, it will mean that it is difficult to know if the door is locked, and so a vicious cycle starts.
</p>

<p>
	 
</p>

<p>
	Ultimately, we are flattered to have been awarded the Ig Nobel prize for literature. The winners of these prizes contribute scientific works which "make you laugh and then make you think".
</p>

<p>
	 
</p>

<p>
	Hopefully our work on jamais vu will inspire more research and even greater insights in the near future.
</p>

<p>
	 
</p>

<p>
	<strong><a href="https://www.sciencealert.com/the-opposite-of-dj-vu-exists-and-its-even-more-uncanny" rel="external nofollow">Source</a></strong>
</p>
]]></description><guid isPermaLink="false">18802</guid><pubDate>Fri, 22 Sep 2023 01:38:11 +0000</pubDate></item><item><title>What can we do about ultraprocessed foods?</title><link>https://nsaneforums.com/news/general-news/what-can-we-do-about-ultraprocessed-foods-r18784/</link><description><![CDATA[<h3>
	Researchers are figuring out the features of these foods that harm our health.
</h3>

<div class="article-content post-page" itemprop="articleBody">
	
	<p>
		From breakfast cereals and protein bars to flavored yogurt and frozen pizzas, ultraprocessed foods are everywhere, filling aisle upon aisle at the supermarket. Fully <a href="https://www.sciencedirect.com/science/article/pii/S0022316622110011?via%3Dihub" rel="external nofollow" target="_blank">58 percent</a> of the calories consumed by adults and <a href="https://jamanetwork.com/journals/jama/fullarticle/2782866" rel="external nofollow" target="_blank">67 percent</a> of those consumed by children in the United States are made up of these highly palatable foodstuffs with their highly manipulated ingredients.
	</p>

	<p>
		 
	</p>

	<p>
		And ultraprocessed foods are not just filling our plates; they’re also taking up more and more space in global conversations about public health and nutrition. In the last decade or so, researchers have ramped up efforts to define ultraprocessed foods and to probe how their consumption correlates to health: A wave of recent studies have linked the foods to heightened risk for conditions ranging from cardiovascular disease and cancer to obesity and depression.
	</p>

	<p>
		 
	</p>

	<p>
		Still, some researchers—and perhaps unsurprisingly, industry representatives—question the strength of the evidence against ultraprocessed foods. The category is too poorly defined and the studies too circumstantial, they say. Plus, labeling such a large portion of our grocery carts as unhealthy ignores the benefits of industrial food processing in making food affordable, safe from foodborne pathogens, easy to prepare and in some cases more sustainable—such as through the development of <a href="https://pubmed.ncbi.nlm.nih.gov/35325028/" rel="external nofollow" target="_blank">plant-derived products</a> designed to replace meat and milk.
	</p>

	<p>
		 
	</p>

	<p>
		“You cannot throw the baby out with the bathwater and decide that you’re going to just dump everything” that’s ultraprocessed, says Ciarán Forde, a sensory science and eating behavior researcher at Wageningen University in the Netherlands and coauthor of a <a href="https://www.annualreviews.org/doi/10.1146/annurev-nutr-062220-030123" rel="external nofollow" target="_blank">2022 look at food processing and diets in the <em>Annual Review of Nutrition</em></a>.
	</p>

	<p>
		 
	</p>

	<p>
		As the debate about ultraprocessed foods roils on, one path forward is to invest in understanding the mechanisms by which ultraprocessed foods affect health. If the foods are indeed harmful, what about them—what features?—makes them so, and why? Through feeding volunteers carefully formulated diets and watching their consumption behavior, researchers can identify the qualities that make these foods both so appealing and so unhealthful, they say. Such studies could help to pinpoint the most harmful types of ultraprocessed foods—ones that might be targeted with warning labels and other policies—and guide companies in tweaking their recipes to produce more healthful options.
	</p>

	<p>
		 
	</p>

	<p>
		“I think the biological mechanisms are really important both to strengthen the evidence, but also to find solutions,” says Filippa Juul, a nutritional epidemiologist at New York University. That said, Juul adds, she thinks there’s already enough evidence about the harms of ultraprocessed foods to recommend that people eat less of them.
	</p>

	<h2>
		Sifting the evidence on ultraprocessed foods
	</h2>

	<p>
		To study ultraprocessed foods, researchers must be able to define them, and even this is contentious. Food preparation involves processes like grinding, cooking, fermenting and pasteurizing — methods that have long been used to make foods safer and more digestible, palatable and storable. But according to the most widely used classification system, called NOVA, ultraprocessed foods are distinguished by additional industrial techniques, like hydrolysis, hydrogenation and extrusion, and with ingredients like emulsifiers, thickeners, flavors and other additives that are rarely found in home kitchens.
	</p>

	<p>
		 
	</p>

	<table border="1px solid black;" title="What are “ultraprocessed” foods? (As defined by the NOVA food classification system)">
		<tbody>
			<tr>
				<th>
					Features
				</th>
				<th>
					Examples
				</th>
			</tr>
			<tr>
				<td>
					Industrially manufactured food products made of several ingredients including sugar, oils, fats and salt (generally in combination and in higher amounts than in processed foods) and substances of no/rare culinary use (such as high-fructose corn syrup, hydrogenated oils, modified starches and protein isolates
				</td>
				<td>
					All carbonated soft drinks; "fruit" drinks and energy drinks<br>
					Flavored yogurt<br>
					Candies (confectionery)<br>
					Margarine
				</td>
			</tr>
			<tr>
				<td>
					Industrial techniques in their manufacture such as extrusion, molding and pre-frying
				</td>
				<td>
					Poultry and fish "nuggets" and "sticks"<br>
					Sausages, hot dogs, luncheon meats, and other reconstituted meat products
				</td>
			</tr>
			<tr>
				<td>
					Additives used to make the product palatable or hyper-palatable (flavors, colourants, non-sugar sweeteners and emulsifiers)
				</td>
				<td>
					Plant-based meat substitutes<br>
					Extruded breakfast "cereals"
				</td>
			</tr>
			<tr>
				<td>
					Designed to be convenient, palatable alternatives to less processed/freshly prepared dishes and meals
				</td>
				<td>
					Powdered "instant" soups, noodles and dessert<br>
					Infant formulas and "follow-on" milks<br>
					"Health" and "slimming" products such as meal-replacement shakes and powder
				</td>
			</tr>
			<tr>
				<td>
					Distinguishable from processed foods by the presence of food substances of no culinary use or of additives with cosmetic functions (flavors, flavor enhancers, colours, emulsifiers, emulsifying salts, sweeteners, thickeners and anti-foaming, bulking, carbonating, foaming, gelling and glazing agents) in their list of ingredient
				</td>
				<td>
					Packaged breads, pastries, cakes, cookies, cake mixes<br>
					Sweet or savory snacks; cured meats; ready-to-heat products such as burgers, and pre-prepared pies and pasta and pizza dishes (when made up of food substances of no culinary use and/or contain classes of additives with cosmetic function
				</td>
			</tr>
			<tr>
				<td>
					Unprocessed or minimally processed foods are absent or present in small amounts
				</td>
				<td>
					Alcoholic beverages
				</td>
			</tr>
			<tr>
				<td colspan="2">
					Adapted from E. Martinez-Steele et al / Nature Food 2023
				</td>
			</tr>
		</tbody>
	</table>

	<div style="margin-top: -1rem; font-size: 0.75rem; line-height: 0.9rem; margin-bottom: 2rem;">
		Lots of foods are processed to some degree—think canning and bottling or the use of preservatives and antioxidants. But ultraprocessed foods are manipulated far beyond that. Here are the attributes of ultraprocessed foods according to NOVA, a broadly used food classification system developed by researchers at the <em>University of Sao Paulo, Brazil.</em>
	</div>

	<p>
		Most of the evidence that ultraprocessed foods are harmful comes from observational studies in which participants are asked about the foods they eat and have their health tracked over time. These studies have consistently found that people who ate more ultraprocessed foods were more likely to develop <a href="https://www.bmj.com/content/365/bmj.l1451" rel="external nofollow" target="_blank">cardiovascular disease</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/35750049/" rel="external nofollow" target="_blank">high blood pressure</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/36854188/" rel="external nofollow" target="_blank">type 2 diabetes</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/37360305/" rel="external nofollow" target="_blank">some types of cancer</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/34455267/" rel="external nofollow" target="_blank">obesity</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/36537321/" rel="external nofollow" target="_blank">depression</a>, and <a href="https://www.annualreviews.org/doi/abs/10.1146/annurev-food-062520-090235" rel="external nofollow" target="_blank">inflammatory</a> diseases of the gastrointestinal tract such as <a href="https://pubmed.ncbi.nlm.nih.gov/36731590/" rel="external nofollow" target="_blank">Crohn’s disease</a>, as well as to <a href="https://academic.oup.com/aje/article/191/7/1323/6539986" rel="external nofollow" target="_blank">die</a> during the course of the studies.
	</p>

	<p>
		 
	</p>
</div>

<div class="article-content post-page" itemprop="articleBody">
	<p>
		Such observational studies can’t prove that ultraprocessed foods caused these health problems, in part because other factors in people’s lives could account for their greater risk of illness and death, Juul says. In the United States, for example, people who eat more ultraprocessed foods also tend to have <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5855172/" rel="external nofollow" target="_blank">lower incomes and education levels</a> and to live in <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8340456/" rel="external nofollow" target="_blank">poorer neighborhoods</a>; and unmeasured factors such as stress, sleep, and exposure to racism and weight bias could confound the correlation between food processing and health.
	</p>

	<p>
		 
	</p>

	<p>
		However, Juul adds, the association between ultraprocessed foods and poor health is remarkably consistent in research from around the world. And though ultraprocessed foods often have poor nutritional profiles—containing more sugar, sodium, and saturated fat than their minimally processed counterparts—that’s not the whole story: Studies that have adjusted for differences in nutritional quality have found <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8747015/" rel="external nofollow" target="_blank">an association of similar magnitude remains</a>. “There seems to be something else about these foods; it’s not just about the nutrients,” Juul says.
	</p>

	<p>
		 
	</p>

	<p>
		Unlike observational studies, randomized controlled trials can provide direct evidence that a particular diet causes health issues, but so far, only one <a href="https://www.cell.com/cell-metabolism/fulltext/S1550-4131(19)30248-7?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS1550413119302487%3Fshowall%3Dtrue" rel="external nofollow" target="_blank">short-term trial</a> of this type has been published. In the tightly controlled study, led by National Institutes of Health nutrition and metabolism scientist Kevin Hall and published in 2019, 20 participants lived at a clinical center for one month and were offered either minimally processed foods or ultraprocessed foods for two weeks, then the other for two weeks. The meals were matched for overall calories, carbohydrates, sugar, fiber, fat, protein, and salt, and participants were told they could eat as much or as little as they liked.
	</p>

	<p>
		 
	</p>

	<p>
		During two weeks on the ultraprocessed diet, participants ate an average of 508 more calories per day and gained about two pounds, the study found; during two weeks on the minimally processed diet, they lost about the same amount.
	</p>

	<p>
		 
	</p>

	<p>
		That result was surprising to Hall, who had predicted that the level of processing wouldn’t matter since the two diets had similar nutrient levels. It also raised new questions: What is it about ultraprocessed foods that makes us eat more? And do all ultraprocessed foods have similar effects on us? The answer to the second question is probably not, Hall says. For example, in a <a href="https://diabetesjournals.org/care/article/46/7/1335/148548/Ultra-Processed-Food-Consumption-and-Risk-of-Type" rel="external nofollow" target="_blank">2023 study</a>, overall intake of ultraprocessed food correlated with a greater risk of type 2 diabetes, but some food types—including cereals, whole grain breads, yogurt, and dairy-based desserts like ice cream—were linked with a lower risk.
	</p>

	<p>
		 
	</p>

	<p>
		Hall says it will take a lot more research to figure out which subcategories of ultraprocessed foods are unhealthy and why; different mechanisms may underlie different maladies. A long list of mechanisms could contribute, adds Juul—such as food additives that affect the microbiome; the foods’ rapid and easy digestibility; chemicals absorbed from packaging; or the displacement of healthy foods from the diet. “It's likely a combination of all of these things,” she says.
	</p>

	<h2>
		Why do we eat more ultraprocessed foods?
	</h2>

	<p>
		If people outside of lab settings eat about 500 extra calories per day on an ultraprocessed diet, as they did in Hall’s 2019 study, it could help to explain why obesity rates have grown in recent decades, he believes. Hall is now focused on understanding why ultraprocessed foods would drive us to do this.
	</p>

	<p>
		 
	</p>

	<p>
		One possible explanation is energy density, or the number of calories per gram of food. In Hall’s 2019 NIH trial, for example, energy density was higher for the ultraprocessed foods, primarily because they contained less water, than for the minimally processed foods. <a href="https://pubmed.ncbi.nlm.nih.gov/36460778/" rel="external nofollow" target="_blank">Previous research</a> has shown that people tend to consume more calories when they eat energy-dense foods, perhaps because the foods are less physically filling to the gastrointestinal tract and allow for more calories to be consumed in a shorter amount of time, interfering with normal satiety signaling. When Hall and colleagues <a href="https://pubmed.ncbi.nlm.nih.gov/37117850/" rel="external nofollow" target="_blank">looked back</a> at 2,733 meals served in two NIH trials comparing different types of diets, they found that energy density was one of the most important determinants of calorie intake within a given meal.
	</p>

	<p>
		 
	</p>

	<p>
		Hall and colleagues also saw in the study that participants ate more when they were offered foods containing greater amounts of certain pairs of nutrients—fat and sugar, fat and <a href="https://knowablemagazine.org/article/food-environment/2023/salt-taste-surprisingly-mysterious" rel="external nofollow" target="_blank">sodium</a>, or carbohydrates and sodium—than are found in nature, or in whole foods. Such foods are “hyperpalatable,” explains Tera Fazzino, a behavioral psychologist at the University of Kansas who <a href="https://pubmed.ncbi.nlm.nih.gov/31689013/" rel="external nofollow" target="_blank">defined</a> the term. Hyperpalatable foods have been shown in animal and human studies to excessively activate reward-sensing circuits in the brain, and it’s more difficult to stop eating them, she says.
	</p>

	<p>
		 
	</p>
</div>

<div class="article-content post-page" itemprop="articleBody">
	<p>
		That’s different from the way we enjoy other foods, Fazzino adds. An apple, for example, contains naturally occurring sugars that make it pleasant to eat, but it’s not hyperpalatable because it doesn’t also contain lots of fat. In a similar manner, many of the foods that Fazzino enjoys when she visits family in Italy, such as fish lightly seasoned with olive oil and salt, and biscotti made with butter and a touch of sugar, leave her feeling perfectly satisfied, she says.
	</p>

	<p>
		 
	</p>

	<p>
		In contrast, it can feel like an act of resistance to stop eating hyperpalatable foods, such as the many packaged snack foods formulated with tasty combinations of carbohydrate, fat, and salt, Fazzino says. And that’s a worry, because Fazzino’s research indicates that <a href="https://pubmed.ncbi.nlm.nih.gov/35581172/" rel="external nofollow" target="_blank">the prevalence of hyperpalatable foods in the US increased</a> from 49 percent in 1988 to 69 percent in 2018.
	</p>

	<p>
		 
	</p>

	<p>
		At the NIH, Hall is currently running another clinical trial to try to tease apart the contributions of energy density and hyperpalatability to how much food people eat. In this study, participants will try four different diets, all matched for nutrient levels, for one week each. One is minimally processed. The other three are ultraprocessed, and either dense in calories or hyperpalatable, or both.
	</p>

	<p>
		 
	</p>

	<p>
		In the Netherlands, meanwhile, eating behavior researcher Forde is focused on yet another food characteristic to explain greater calorie intake of ultraprocessed foods: texture. Many ultraprocessed foods are “effectively prechewed when they arrive on your plate because they’re softly textured,” Forde says—and that makes them easier to eat more quickly.
	</p>

	<p>
		 
	</p>

	<p>
		Research by Forde and others has found that people eat meals with harder textures more slowly. And in a recent trial, participants consumed <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9257473/" rel="external nofollow" target="_blank">26 percent fewer calories from hard-textured lunches than they did from softly textured ones</a>. Calorie intake was lowest of all when people ate a meal that was both hard-textured and also minimally processed.
	</p>

	<p>
		 
	</p>

	<p>
		Forde’s group is now planning a randomized controlled trial, funded in part by food companies, that will test participants’ intake of two different ultraprocessed diets for two weeks. Forde predicts that people will eat more of the “fast diet” that is soft in texture than the “slow diet,” which has been designed to have harder textures.
	</p>

	<p>
		 
	</p>

	<p>
		Other researchers are looking at ultraprocessed foods from the perspective of <a href="https://knowablemagazine.org/article/mind/2021/foods-abuse-nutritionists-consider-food-addiction" rel="external nofollow" target="_blank">addiction biology</a>. Because we can eat these foods quickly, and they often lack much structure or fiber to slow their digestion, they deliver a quick dose of calories and a rewarding spike in the neurotransmitter dopamine to the brain, says Alexandra DiFeliceantonio, a neuroscientist who studies eating behavior at the Fralin Biomedical Research Institute at Virginia Tech Carilion.
	</p>

	<p>
		 
	</p>

	<p>
		In an ongoing study, she and colleagues are giving people calorie-matched, rapidly digested sugar (“fast calories”) or slowly digested sugars with added fiber (“slow calories”) along with previously unfamiliar flavors. DiFeliceantonio hypothesizes that people will develop a stronger preference for the flavors paired with the fast calories. And this, she adds, could help explain why we might struggle to stop eating certain ultraprocessed foods that were “literally engineered to be delicious,” she says.
	</p>

	<h2>
		Regulate? Or reformulate?
	</h2>

	<p>
		DiFeliceantonio hopes that studies like hers will help disentangle what it is about ultraprocessed foods that cause overeating, and support new regulations that lead to more healthful choices. “Then,” she says, “you have a really strong scientific foundation for making changes in the environment, and not just asking people to make changes on an individual level.” Regulations might include limiting how the foods are advertised (for example, not during television shows for children) or requiring neighborhood markets to carry fresh foods in addition to packaged ones.
	</p>

	<p>
		 
	</p>

	<p>
		Some public health experts say that regardless of the mechanisms, we know enough that we should be taking steps to reduce the consumption of ultraprocessed foods right now. “Whether they’re hyperpalatable, whether they’re energy-dense, whatever the cause is, the effect has been huge,” says Barry Popkin, an economist and nutrition epidemiologist at the University of North Carolina at Chapel Hill.
	</p>

	<p>
		 
	</p>

	<p>
		Popkin points to countries that have already imposed <a href="https://pubmed.ncbi.nlm.nih.gov/33865500/" rel="external nofollow" target="_blank">regulations and restrictions</a> on certain ultraprocessed foods. Chile, for example, has added warning labels on the front of food packages and taxed sugary drinks; the country has also banned certain foods in schools and restricted their marketing to children—policies associated with a <a href="https://pubmed.ncbi.nlm.nih.gov/32045424/" rel="external nofollow" target="_blank">drop in sugary beverage purchases</a> and <a href="https://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1003220" rel="external nofollow" target="_blank">improved nutritional quality of packaged foods</a>. More than <a href="https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2802843" rel="external nofollow" target="_blank">50 countries</a>, covering about 20 percent of the world’s population, now <a href="https://knowablemagazine.org/article/health-disease/2019/do-soda-taxes-work" rel="external nofollow" target="_blank">tax sugary drinks</a> because of their effects on health, and many other countries, including Israel, Canada, Brazil, and Mexico, are adding warning labels to unhealthy foods, Popkin says.
	</p>

	<p>
		 
	</p>

	<p>
		Forde worries that such policies will only make food more expensive and slow progress in developing more sustainable foods. It would be more productive, he says, to encourage food companies to leverage their processing technologies to make healthier products. (Forde sits on an advisory council of Kerry Group, a food and ingredient company.) They could use food-processing techniques to reduce the caloric density of foods or incorporate more texture so that people eat a bit slower, he says. “If processing is the problem, processing is also by far the best solution we currently have,” he adds.
	</p>

	<p>
		 
	</p>

	<p>
		Hall would also like to see food scientists work with nutrition scientists to take on this challenge. Take a chicken nugget, for example. By adding a bit of fiber and tweaking the salt and fat content, skilled food scientists might be able to make it less energy-dense and remove its hyperpalatable qualities, he says. Whether people will still want to eat such a nugget remains to be seen.
	</p>

	<p>
		 
	</p>

	<p>
		Knowable Magazine, 2023. DOI: <a href="https://knowablemagazine.org/article/food-environment/2023/what-can-we-do-about-ultraprocessed-foods" rel="external nofollow">10.1146/knowable-092023-2</a>
	</p>

	<p>
		 
	</p>
</div>

<p>
	<a href="https://arstechnica.com/health/2023/09/what-can-we-do-about-ultraprocessed-foods/" rel="external nofollow">Source</a>
</p>
]]></description><guid isPermaLink="false">18784</guid><pubDate>Thu, 21 Sep 2023 19:26:26 +0000</pubDate></item><item><title>The Animals Are Talking. What Does It Mean?</title><link>https://nsaneforums.com/news/general-news/the-animals-are-talking-what-does-it-mean-r18770/</link><description><![CDATA[<p>
	<span style="font-size:22px;">Language was long understood as a human-only affair. New research suggests that isn’t so.</span>
</p>

<p>
	 
</p>

<p>
	Can a mouse learn a new song?
</p>

<p>
	 
</p>

<p>
	Such a question might seem whimsical. Though humans have lived alongside mice for at least 15,000 years, few of us have ever heard mice sing, because they do so in frequencies beyond the range detectable by human hearing. As pups, their high-pitched songs alert their mothers to their whereabouts; as adults, they sing in ultrasound to woo one another. For decades, researchers considered mouse songs instinctual, the fixed tunes of a windup music box, rather than the mutable expressions of individual minds.
</p>

<p>
	 
</p>

<p>
	But no one had tested whether that was really true. In 2012, a team of neurobiologists at Duke University, led by Erich Jarvis, a neuroscientist who studies vocal learning, designed an experiment to find out. The team surgically deafened five mice and recorded their songs in a mouse-size sound studio, tricked out with infrared cameras and microphones. They then compared sonograms of the songs of deafened mice with those of hearing mice. If the mouse songs were innate, as long presumed, the surgical alteration would make no difference at all.
</p>

<p>
	 
</p>

<p>
	Jarvis and his researchers slowed down the tempo and shifted the pitch of the recordings, so that they could hear the songs with their own ears. Those of the intact mice sounded “remarkably similar to some bird songs,” Jarvis wrote in a 2013 paper that described the experiment, with whistlelike syllables similar to those in the songs of canaries and the trills of dolphins. Not so the songs of the deafened mice: Deprived of auditory feedback, their songs became degraded, rendering them nearly unrecognizable. They sounded, the scientists noted, like “squawks and screams.” Not only did the tunes of a mouse depend on its ability to hear itself and others, but also, as the team found in another experiment, a male mouse could alter the pitch of its song to compete with other male mice for female attention.
</p>

<p>
	 
</p>

<p>
	Inside these murine skills lay clues to a puzzle many have called “the hardest problem in science”: the origins of language. In humans, “vocal learning” is understood as a skill critical to spoken language. Researchers had already discovered the capacity for vocal learning in species other than humans, including in songbirds, hummingbirds, parrots, cetaceans such as dolphins and whales, pinnipeds such as seals, elephants and bats.
</p>

<p>
	But given the centuries-old idea that a deep chasm separated human language from animal communications, most scientists understood the vocal learning abilities of other species as unrelated to our own — as evolutionarily divergent as the wing of a bat is to that of a bee. The apparent absence of intermediate forms of language — say, a talking animal — left the question of how language evolved resistant to empirical inquiry.
</p>

<p>
	 
</p>

<p>
	When the Duke researchers dissected the brains of the hearing and deafened mice, they found a rudimentary version of the neural circuitry that allows the forebrains of vocal learners such as humans and songbirds to directly control their vocal organs. Mice don’t seem to have the vocal flexibility of elephants; they cannot, like the 10-year-old female African elephant in Tsavo, Kenya, mimic the sound of trucks on the nearby Nairobi-Mombasa highway. Or the gift for mimicry of seals; an orphaned harbor seal at the New England Aquarium could utter English phrases in a perfect Maine accent (“Hoover, get over here,” he said. “Come on, come on!”).
</p>

<p>
	 
</p>

<p>
	But the rudimentary skills of mice suggested that the language-critical capacity might exist on a continuum, much like a submerged land bridge might indicate that two now-isolated continents were once connected. In recent years, an array of findings have also revealed an expansive nonhuman soundscape, including: turtles that produce and respond to sounds to coordinate the timing of their birth from inside their eggs; coral larvae that can hear the sounds of healthy reefs; and plants that can detect the sound of running water and the munching of insect predators. Researchers have found intention and meaning in this cacophony, such as the purposeful use of different sounds to convey information. They’ve theorized that one of the most confounding aspects of language, its rules-based internal structure, emerged from social drives common across a range of species.
</p>

<p>
	 
</p>

<p>
	With each discovery, the cognitive and moral divide between humanity and the rest of the animal world has eroded. For centuries, the linguistic utterances of Homo sapiens have been positioned as unique in nature, justifying our dominion over other species and shrouding the evolution of language in mystery. Now, experts in linguistics, biology and cognitive science suspect that components of language might be shared across species, illuminating the inner lives of animals in ways that could help stitch language into their evolutionary history — and our own.
</p>

<p>
	 
</p>

<p>
	<strong>For hundreds of years</strong>, language marked “the true difference between man and beast,” as the philosopher René Descartes wrote in 1649. As recently as the end of the last century, archaeologists and anthropologists speculated that 40,000 to 50,000 years ago a “human revolution” fractured evolutionary history, creating an unbridgeable gap separating humanity’s cognitive and linguistic abilities from those of the rest of the animal world.
</p>

<p>
	 
</p>

<p>
	Linguists and other experts reinforced this idea. In 1959, the M.I.T. linguist Noam Chomsky, then 30, wrote a blistering 33-page takedown of a book by the celebrated behaviorist B.F. Skinner, which argued that language was just a form of “verbal behavior,” as Skinner titled the book, accessible to any species given sufficient conditioning. One observer called it “perhaps the most devastating review ever written.” Between 1972 and 1990, there were more citations of Chomsky’s critique than Skinner’s book, which bombed.
</p>

<p>
	 
</p>

<p>
	The view of language as a uniquely human superpower, one that enabled Homo sapiens to write epic poetry and send astronauts to the moon, presumed some uniquely human biology to match. But attempts to find those special biological mechanisms — whether physiological, neurological, genetic — that make language possible have all come up short.
</p>

<p>
	 
</p>

<p>
	One high-profile example came in 2001, when a team led by the geneticists Cecilia Lai and Simon Fisher discovered a gene — called FoxP2 — in a London family riddled with childhood apraxia of speech, a disorder that impairs the ability of otherwise cognitively capable individuals to coordinate their muscles to produce sounds, syllables and words in an intelligible sequence. Commentators hailed FoxP2 as the long sought-after gene that enabled humans to talk — until the gene turned up in the genomes of rodents, birds, reptiles, fish and ancient hominins such as Neanderthals, whose version of FoxP2 is much like ours. (Fisher so often encountered the public expectation that FoxP2 was the “language gene” that he resolved to acquire a T-shirt that read, “It’s more complicated than that.”)
</p>

<p>
	 
</p>

<p>
	The search for an exclusively human vocal anatomy has failed, too. For a 2001 study, the cognitive scientist Tecumseh Fitch cajoled goats, dogs, deer and other species to vocalize while inside a cineradiograph machine that filmed the way their larynxes moved under X-ray. Fitch discovered that species with larynxes different from ours — ours is “descended” and located in our throats rather than our mouths — could nevertheless move them in similar ways. One of them, the red deer, even had the same descended larynx we do.
</p>

<p>
	 
</p>

<p>
	Fitch and his then-colleague at Harvard, the evolutionary biologist Marc Hauser, began to wonder if they’d been thinking about language all wrong. Linguists described language as a singular skill, like being able to swim or bake a soufflé: You either had it or you didn’t. But perhaps language was more like a multicomponent system that included psychological traits, such as the ability to share intentions; physiological ones, such as motor control over vocalizations and gestures; and cognitive capacities, such as the ability to combine signals according to rules, many of which might appear in other animals as well.
</p>

<p>
	 
</p>

<p>
	Fitch, whom I spoke to by Zoom in his office at the University of Vienna, drafted a paper with Hauser as a “kind of an argument against Chomsky,” he told me. As a courtesy, he sent the M.I.T. linguist a draft. One evening, he and Hauser were sitting in their respective offices along the same hall at Harvard when an email from Chomsky dinged their inboxes. “We both read it and we walked out of our rooms going, ‘What?’” Chomsky indicated that not only did he agree, but that he’d be willing to sign on to their next paper on the subject as a co-author. That paper, which has since racked up more than 7,000 citations, appeared in the journal Science in 2002.
</p>

<p>
	 
</p>

<p>
	Squabbles continued over which components of language were shared with other species and which, if any, were exclusive to humans. Those included, among others, language’s intentionality, its system of combining signals, its ability to refer to external concepts and things separated by time and space and its power to generate an infinite number of expressions from a finite number of signals. But reflexive belief in language as an evolutionary anomaly started to dissolve. “For the biologists,” recalled Fitch, “it was like, ‘Oh, good, finally the linguists are being reasonable.’”
</p>

<p>
	 
</p>

<p>
	Evidence of continuities between animal communication and human language continued to mount. The sequencing of the Neanderthal genome in 2010 suggested that we hadn’t significantly diverged from that lineage, as the theory of a “human revolution” posited. On the contrary, Neanderthal genes and those of other ancient hominins persisted in the modern human genome, evidence of how intimately we were entangled. In 2014, Jarvis found that the neural circuits that allowed songbirds to learn and produce novel sounds matched those in humans, and that the genes that regulated those circuits evolved in similar ways. The accumulating evidence left “little room for doubt,” Cedric Boeckx, a theoretical linguist at the University of Barcelona, noted in the journal Frontiers in Neuroscience. “There was no ‘great leap forward.’”
</p>

<p>
	 
</p>

<p>
	As our understanding of the nature and origin of language shifted, a host of fruitful cross-disciplinary collaborations arose. Colleagues of Chomsky’s, such as the M.I.T. linguist Shigeru Miyagawa, whose early career was shaped by the precept that “we’re smart, they’re not,” applied for grants with primatologists and neuroscientists to study how human language might be related to birdsong and primate calls. Interdisciplinary centers sprang up devoted specifically to the evolution of language, including at the University of Zurich and the University of Edinburgh. Lectures at a biannual conference on language evolution once dominated by “armchair theorizing,” as the cognitive scientist and founder of the University of Edinburgh’s Centre for Language Evolution, Simon Kirby, put it, morphed into presentations “completely packed with empirical data.”
</p>

<p>
	 
</p>

<p style="text-align:center;">
	<img alt="24mag-animals-secondary-jumbo.jpg?qualit" class="ipsImage" data-ratio="75.10" height="540" width="540" src="https://static01.nyt.com/images/2023/09/24/magazine/24mag-animals-secondary/24mag-animals-secondary-jumbo.jpg?quality=75&amp;auto=webp" />
</p>

<p style="text-align:center;">
	<span style="font-size:12px;"><em>Illustration by Denise Nestor</em></span>
</p>

<p style="text-align:center;">
	 
</p>

<p>
	<strong>One of the thorniest</strong> problems researchers sought to address was the link between thought and language. Philosophers and linguists long held that language must have evolved not for the purpose of communication but to facilitate abstract thought. The grammatical rules that structure language, a feature of languages from Algonquin to American Sign Language, are more complex than necessary for communication. Language, the argument went, must have evolved to help us think, in much the same way that mathematical notations allow us to make complex calculations.
</p>

<p>
	 
</p>

<p>
	Ev Fedorenko, a cognitive neuroscientist at M.I.T., thought this was “a cool idea,” so, about a decade ago, she set out to test it. If language is the medium of thought, she reasoned, then thinking a thought and absorbing the meaning of spoken or written words should activate the same neural circuits in the brain, like two streams fed by the same underground spring. Earlier brain-imaging studies showed that patients with severe aphasia could still solve mathematical problems, despite their difficulty in deciphering or producing language, but failed to pinpoint distinctions between brain regions dedicated to thought and those dedicated to language. Fedorenko suspected that might be because the precise location of these regions varied from individual to individual. In a 2011 study, she asked healthy subjects to make computations and decipher snatches of spoken and written language while she watched how blood flowed to aroused parts of their brains using an M.R.I. machine, taking their unique neural circuitry into account in her subsequent analysis. Her fM.R.I. studies showed that thinking thoughts and decoding words mobilized distinct brain pathways. Language and thought, Fedorenko says, “really are separate in an adult human brain.”
</p>

<p>
	 
</p>

<p>
	At the University of Edinburgh, Kirby hit upon a process that might explain how language’s internal structure evolved. That structure, in which simple elements such as sounds and words are arranged into phrases and nested hierarchically within one another, gives language the power to generate an infinite number of meanings; it is a key feature of language as well as of mathematics and music. But its origins were hazy. Because children intuit the rules that govern linguistic structure with little if any explicit instruction, philosophers and linguists argued that it must be a product of some uniquely human cognitive process. But researchers who scrutinized the fossil record to determine when and how that process evolved were stumped: The first sentences uttered left no trace behind.
</p>

<p>
	 
</p>

<p>
	Kirby designed an experiment to simulate the evolution of language inside his lab. First, he developed made-up codes to serve as proxies for the disordered collections of words widely believed to have preceded the emergence of structured language, such as random sequences of colored lights or a series of pantomimes. Then he recruited subjects to use the code under a variety of conditions and studied how the code changed. He asked subjects to use the code to solve communication tasks, for example, or to pass the code on to one another as in a game of telephone. He ran the experiment hundreds of times using different parameters on a variety of subjects, including on a colony of baboons living in a seminaturalistic enclosure equipped with a bank of computers on which they could choose to play his experimental games.
</p>

<p>
	 
</p>

<p>
	What he found was striking: Regardless of the native tongue of the subjects, or whether they were baboons, college students or robots, the results were the same. When individuals passed the code on to one another, the code became simpler but also less precise. But when they passed it on to one another and also used it to communicate, the code developed a distinct architecture. Random sequences of colored lights turned into richly patterned ones; convoluted, pantomimic gestures for words such as “church” or “police officer” became abstract, efficient signs. “We just saw, spontaneously emerging out of this experiment, the language structures we were waiting for,” Kirby says. His findings suggest that language’s mystical power — its ability to turn the noise of random signals into intelligible formulations — may have emerged from a humble trade-off: between simplicity, for ease of learning, and what Kirby called “expressiveness,” for unambiguous communication.
</p>

<p>
	 
</p>

<p>
	For Descartes, the equation of language with thought meant animals had no mental life at all: “The brutes,” he opined, “don’t have any thought.” Breaking the link between language and human biology didn’t just demystify language; it restored the possibility of mind to the animal world and repositioned linguistic capacities as theoretically accessible to any social species.
</p>

<p>
	 
</p>

<p>
	<strong>The search for</strong> the components of language in nonhuman animals now extends to the far reaches of our phylogenetic tree, encompassing creatures that may communicate in radically unfamiliar ways.
</p>

<p>
	 
</p>

<p>
	This summer, I met with Marcelo Magnasco, a biophysicist, and Diana Reiss, a psychologist at Hunter College who studies dolphin cognition, in Magnasco’s lab at Rockefeller University. Overlooking the East River, it was a warmly lit room, with rows of burbling tanks inhabited by octopuses, whose mysterious signals they hoped to decode. Magnasco became curious about the cognitive and communicative abilities of cephalopods while diving recreationally, he told me. Numerous times, he said, he encountered cephalopods and had “the overpowering impression that they were trying to communicate with me.” During the Covid-19 shutdown, when his work studying dolphin communication with Reiss was derailed, Magnasco found himself driving to a Petco in Staten Island to buy tanks for octopuses to live in his lab.
</p>

<p>
	 
</p>

<p>
	During my visit, the grayish pink tentacles of the octopus clinging to the side of the glass wall of her tank started to flash bright white. Was she angry? Was she trying to tell us something? Was she even aware of our presence? There was no way to know, Magnasco said. Earlier efforts to find linguistic capacities in other species failed, in part, he explained, because we assumed they would look like our own. But the communication systems of other species might, in fact, be “truly exotic to us,” Magnasco said. A species that can recognize objects by echolocation, as cetaceans and bats can, might communicate using acoustic pictographs, for example, which might sound to us like meaningless chirps or clicks. To disambiguate the meaning of animal signals, such as a string of dolphin clicks or whalesong, scientists needed some inkling of where meaning-encoding units began and ended, Reiss explained. “We, in fact, have no idea what the smallest unit is,” she said. If scientists analyze animal calls using the wrong segmentation, meaningful expressions turn into meaningless drivel: “ad ogra naway” instead of “a dog ran away.”
</p>

<p>
	 
</p>

<p>
	An international initiative called Project CETI, founded by David Gruber, a biologist at the City University of New York, hopes to get around this problem by feeding recordings of sperm-whale clicks, known as codas, into computer models, which might be able to discern patterns in them, in the same way that ChatGPT was able to grasp vocabulary and grammar in human language by analyzing publicly available text. Another method, Reiss says, is to provide animal subjects with artificial codes and observe how they use them.
</p>

<p>
	 
</p>

<p>
	Reiss’s research on dolphin cognition is one of a handful of projects on animal communication that dates back to the 1980s, when there were widespread funding cuts in the field, after a top researcher retracted his much-hyped claim that a chimpanzee could be trained to use sign language to converse with humans. In a study published in 1993, Reiss offered bottlenose dolphins at a facility in Northern California an underwater keypad that allowed them to choose specific toys, which it delivered while emitting computer-generated whistles, like a kind of vending machine. The dolphins spontaneously began mimicking the computer-generated whistles when they played independently with the corresponding toy, like kids tossing a ball and naming it “ball, ball, ball,” Reiss told me. “The behavior,” Reiss said, “was strikingly similar to the early stages of language acquisition in children.”  
</p>

<p>
	 
</p>

<p>
	The researchers hoped to replicate the method by outfitting an octopus tank with an interactive platform of some kind and observing how the octopus engaged with it. But it was unclear whether such a device might interest the lone cephalopod. An earlier episode of displeasure led her to discharge enough ink to turn her tank water so black that she couldn’t be seen. Unlocking her communicative abilities might require that she consider the scientists as fascinating as they did her.
</p>

<p>
	 
</p>

<p>
	While experimenting with animals trapped in cages and tanks can reveal their latent faculties, figuring out the range of what animals are communicating to one another requires spying on them in the wild. Past studies often conflated general communication, in which individuals extract meaning from signals sent by other individuals, with language’s more specific, flexible and open-ended system. In a seminal 1980 study, for example, the primatologists Robert Seyfarth and Dorothy Cheney used the “playback” technique to decode the meaning of alarm calls issued by vervet monkeys at Amboseli National Park in Kenya. When a recording of the barklike calls emitted by a vervet encountering a leopard was played back to other vervets, it sent them scampering into the trees. Recordings of the low grunts of a vervet who spotted an eagle led other vervets to look up into the sky; recordings of the high-pitched chutters emitted by a vervet upon noticing a python caused them to scan the ground.
</p>

<p>
	 
</p>

<p>
	At the time, The New York Times ran a front-page story heralding the discovery of a “rudimentary ‘language’” in vervet monkeys. But critics objected that the calls might not have any properties of language at all. Instead of being intentional messages to communicate meaning to others, the calls might be involuntary, emotion-driven sounds, like the cry of a hungry baby. Such involuntary expressions can transmit rich information to listeners, but unlike words and sentences, they don’t allow for discussion of things separated by time and space. The barks of a vervet in the throes of leopard-induced terror could alert other vervets to the presence of a leopard — but couldn’t provide any way to talk about, say, “the really smelly leopard who showed up at the ravine yesterday morning.”
</p>

<p>
	 
</p>

<p>
	Toshitaka Suzuki, an ethologist at the University of Tokyo who describes himself as an animal linguist, struck upon a method to disambiguate intentional calls from involuntary ones while soaking in a bath one day. When we spoke over Zoom, he showed me an image of a fluffy cloud. “If you hear the word ‘dog,’ you might see a dog,” he pointed out, as I gazed at the white mass. “If you hear the word ‘cat,’ you might see a cat.” That, he said, marks the difference between a word and a sound. “Words influence how we see objects,” he said. “Sounds do not.” Using playback studies, Suzuki determined that Japanese tits, songbirds that live in East Asian forests and that he has studied for more than 15 years, emit a special vocalization when they encounter snakes. When other Japanese tits heard a recording of the vocalization, which Suzuki dubbed the “jar jar” call, they searched the ground, as if looking for a snake. To determine whether “jar jar” meant “snake” in Japanese tit, he added another element to his experiments: an eight-inch stick, which he dragged along the surface of a tree using hidden strings. Usually, Suzuki found, the birds ignored the stick. It was, by his analogy, a passing cloud. But then he played a recording of the “jar jar” call. In that case, the stick seemed to take on new significance: The birds approached the stick, as if examining whether it was, in fact, a snake. Like a word, the “jar jar” call had changed their perception.
</p>

<p>
	 
</p>

<p>
	Cat Hobaiter, a primatologist at the University of St. Andrews who works with great apes, developed a similarly nuanced method. Because great apes appear to have a relatively limited repertoire of vocalizations, Hobaiter studies their gestures. For years, she and her collaborators have followed chimps in the Budongo forest and gorillas in Bwindi in Uganda, recording their gestures and how others respond to them. “Basically, my job is to get up in the morning to get the chimps when they’re coming down out of the tree, or the gorillas when they’re coming out of the nest, and just to spend the day with them,” she told me. So far, she says, she has recorded about 15,600 instances of gestured exchanges between apes.
</p>

<p>
	 
</p>

<p>
	To determine whether the gestures are involuntary or intentional, she uses a method adapted from research on human babies. Hobaiter looks for signals that evoke what she calls an “Apparently Satisfactory Outcome.” The method draws on the theory that involuntary signals continue even after listeners have understood their meaning, while intentional ones stop once the signaler realizes her listener has comprehended the signal. It’s the difference between the continued wailing of a hungry baby after her parents have gone to fetch a bottle, Hobaiter explains, and my entreaties to you to pour me some coffee, which cease once you start reaching for the coffeepot. To search for a pattern, she says she and her researchers have looked “across hundreds of cases and dozens of gestures and different individuals using the same gesture across different days.” So far, her team’s analysis of 15 years’ worth of video-recorded exchanges has pinpointed dozens of ape gestures that trigger “apparently satisfactory outcomes.”
</p>

<p>
	 
</p>

<p>
	These gestures may also be legible to us, albeit beneath our conscious awareness. Hobaiter applied her technique on pre-verbal 1- and 2-year-old children, following them around recording their gestures and how they affected attentive others, “like they’re tiny apes, which they basically are,” she says. She also posted short video clips of ape gestures online and asked adult visitors who’d never spent any time with great apes to guess what they thought they meant. She found that pre-verbal human children use at least 40 or 50 gestures from the ape repertoire, and adults correctly guessed the meaning of video-recorded ape gestures at a rate “significantly higher than expected by chance,” as Hobaiter and Kirsty E. Graham, a postdoctoral research fellow in Hobaiter’s lab, reported in a 2023 paper for PLOS Biology.
</p>

<p>
	 
</p>

<p>
	The emerging research might seem to suggest that there’s nothing very special about human language. Other species use intentional wordlike signals just as we do. Some, such as Japanese tits and pied babblers, have been known to combine different signals to make new meanings. Many species are social and practice cultural transmission, satisfying what might be prerequisite for a structured communication system like language. And yet a stubborn fact remains. The species that use features of language in their communications have few obvious geographical or phylogenetic similarities. And despite years of searching, no one has discovered a communication system with all the properties of language in any species other than our own.
</p>

<p>
	 
</p>

<p>
	For some scientists, the mounting evidence of cognitive and linguistic continuities between humans and animals outweighs evidence of any gaps. “There really isn’t such a sharp distinction,” Jarvis, now at Rockefeller University, said in a podcast. Fedorenko agrees. The idea of a chasm separating man from beast is a product of “language elitism,” she says, as well as a myopic focus on “how different language is from everything else.”
</p>

<p>
	 
</p>

<p>
	But for others, the absence of clear evidence of all the components of language in other species is, in fact, evidence of their absence. In a 2016 book on language evolution titled “Why Only Us,” written with the linguist Robert C. Berwick, Chomsky describes animal communications as “radically different” from human language. Seyfarth and Cheney, in a 2018 book, note the “striking discontinuities” between human and nonhuman loquacity. Animal calls may be modifiable; they may be voluntary and intentional. But they’re rarely combined according to rules in the way that human words are and “appear to convey only limited information,” they write. If animals had anything like the full suite of linguistic components we do, Kirby says, we would know by now. Animals with similar cognitive and social capacities to ours rarely express themselves systematically the way we do, with systemwide cues to distinguish different categories of meaning. “We just don’t see that kind of level of systematicity in the communication systems of other species,” Kirby said in a 2021 talk.
</p>

<p>
	 
</p>

<p>
	This evolutionary anomaly may seem strange if you consider language an unalloyed benefit. But what if it isn’t? Even the most wondrous abilities can have drawbacks. According to the popular “self-domestication” hypothesis of language’s origins, proposed by Kirby and James Thomas in a 2018 paper published in Biology &amp; Philosophy, variable tones and inventive locutions might prevent members of a species from recognizing others of their kind. Or, as others have pointed out, they might draw the attention of predators. Such perils could help explain why domesticated species such as Bengalese finches have more complex and syntactically rich songs than their wild kin, the white-rumped munia, as discovered by the biopsychologist Kazuo Okanoya in 2012; why tamed foxes and domesticated canines exhibit heightened abilities to communicate, at least with humans, compared with wolves and wild foxes; and why humans, described by some experts as a domesticated species of their ape and hominin ancestors, might be the most talkative of all. A lingering gap between our abilities and those of other species, in other words, does not necessarily leave language stranded outside evolution. Perhaps, Fitch says, language is unique to Homo sapiens, but not in any unique way: special to humans in the same way the trunk is to the elephant and echolocation is to the bat.
</p>

<p>
	 
</p>

<p>
	The quest for language’s origins has yet to deliver King Solomon’s seal, a ring that magically bestows upon its wearer the power to speak to animals, or the future imagined in a short story by Ursula K. Le Guin, in which therolinguists pore over the manuscripts of ants, the “kinetic sea writings” of penguins and the “delicate, transient lyrics of the lichen.” Perhaps it never will. But what we know so far tethers us to our animal kin regardless. No longer marooned among mindless objects, we have emerged into a remade world, abuzz with the conversations of fellow thinking beings, however inscrutable.
</p>

<p>
	 
</p>

<p>
	<strong><a href="https://www.nytimes.com/2023/09/20/magazine/animal-communication.html" rel="external nofollow">Source</a></strong>
</p>
]]></description><guid isPermaLink="false">18770</guid><pubDate>Wed, 20 Sep 2023 12:47:50 +0000</pubDate></item><item><title>High Blood Pressure Is the World&#x2019;s Biggest Killer. Now There&#x2019;s a Plan to Tackle It</title><link>https://nsaneforums.com/news/general-news/high-blood-pressure-is-the-world%E2%80%99s-biggest-killer-now-there%E2%80%99s-a-plan-to-tackle-it-r18751/</link><description><![CDATA[<h3>
	Once considered a disease of the affluent, hypertension now affects a third of all adults. The WHO wants nations to get organized to combat it.
</h3>

<p>
	The World Health Organization (WHO) is taking on the world’s worst killer, laying out <a href="https://www.who.int/news/item/19-09-2023-first-who-report-details-devastating-impact-of-hypertension-and-ways-to-stop-it" rel="external nofollow">its first plan</a> to conquer hypertension—a level of high blood pressure that affects one in every three adults globally. That figure has doubled since 1990. It’s now up to 1.3 billion people.
</p>

<p>
	 
</p>

<p>
	High blood pressure might sound like a disease of rich nations, but in a report released today during the United Nations General Assembly, the WHO said that three-fourths of people living with hypertension reside in low- and middle-income nations. Nearly half of them have no idea they have the condition, which causes heart attacks, kidney disease, and stroke. Four-fifths of them, including both people with a diagnosis and those who don’t know they are affected, aren’t getting adequate treatment to control it.
</p>

<p>
	 
</p>

<p>
	If that could be improved, the agency said, 76 million lives could be saved between now and the year 2050. “There are some health issues for which we lack knowledge or effective tools,” said Tedros Adhanom Ghebreyesus, the WHO’s director general—who has been open about controlling his own high blood pressure with medication—during a briefing in New York City. “Hypertension is not one of them. We have the tools. Every country can do more to use those tools.”
</p>

<p>
	 
</p>

<p>
	Technically, hypertension is an exacerbation of high blood pressure. A blood pressure monitor displays two numbers: the pressure inside arteries when the heart beats, followed by the pressure between beats. A measurement of 120/80 mmHg (indicating the movement of a column of mercury in the monitor) is considered ideal. When the first figure rises above 140 or the second nudges above 90, that’s hypertension: the point at which the force of the blood can damage arteries and reduce the amount of oxygen reaching the heart.
</p>

<p>
	 
</p>

<p>
	Blood pressure rises for a variety of reasons, which may be different around the world: eating a lot of salt, drinking alcohol, using tobacco, breathing polluted air, and not exercising. The remedies are simple, though not necessarily easy to scale: fixing diets, providing affordable medications, and building out health care and information systems so that people can be diagnosed and monitored without a lot of effort on their part.
</p>

<p>
	 
</p>

<p>
	“The bottom line here is that the world's most deadly condition is also the most neglected,” said Tom Frieden, a former director of the US Centers for Disease Control and Prevention and president and CEO of the health nonprofit <a data-event-click='{"element":"ExternalLink","outgoingURL":"https://resolvetosavelives.org"}' data-offer-url="https://resolvetosavelives.org" href="https://resolvetosavelives.org" rel="external nofollow" target="_blank">Resolve to Save Lives</a> (which collaborates with the WHO), in a separate briefing earlier. “For more than half a century, treatment of high blood pressure has been the standard of care in higher income countries. It's way past time for it to become the standard of care for every person in the world.”
</p>

<p>
	 
</p>

<p>
	The WHO plan calls for countries to make controlling hypertension a government priority, something that health ministries write plans for and health care systems emphasize. (The accompanying report offers Canada and South Korea as examples; those countries got hypertension under control in more than half the people diagnosed with it.) After that, the agency recommends uniform protocols for diagnosis and treatment uniform, down to the order in which to try certain drugs and the doses to use. It also outlines how to organize outreach workers and paraprofessionals to increase the number of people working on the problem while keeping costs down. Finally, it describes standards for governments buying the needed drugs—which are all inexpensive generics—and for creating data systems to track patients and treatments.
</p>

<p>
	 
</p>

<p>
	Experts not affiliated with the WHO’s project said the prevalence of hypertension around the globe is a clue that it is a disease of modernity. “I’m from Uganda, and when I was growing up in the ’80s, hypertension used to be considered a disease of the affluent. But that is no longer the case,” says Annet Kirabo, an associate professor at Vanderbilt University Medical Center who leads a hypertension research project in Zambia. “Africa is being Westernized. Some of the diets prevalent here that contribute to hypertension and other cardiovascular diseases are common back there in sub-Saharan Africa also.”
</p>

<p>
	 
</p>

<p>
	While salt consumption is a major factor in the rise of high blood pressure—and may be particularly dangerous in Black populations, who share <a href="https://www.pnas.org/doi/10.1073/pnas.1400699111" rel="external nofollow">genetic mutations</a> making them more sensitive to salt—other factors influence it as well. Some may be more common in emerging-economy nations, such as a loss of access to traditional diets as people migrate to cities, an inability to exercise safely, and an exposure to fine particulates from <a data-event-click='{"element":"ExternalLink","outgoingURL":"https://www.annualreviews.org/doi/10.1146/annurev-med-042220-011549?url_ver=Z39.88-2003&amp;rfr_id=ori%3Arid%3Acrossref.org&amp;rfr_dat=cr_pub++0pubmed"}' data-offer-url="https://www.annualreviews.org/doi/10.1146/annurev-med-042220-011549?url_ver=Z39.88-2003&amp;rfr_id=ori%3Arid%3Acrossref.org&amp;rfr_dat=cr_pub++0pubmed" href="https://www.annualreviews.org/doi/10.1146/annurev-med-042220-011549?url_ver=Z39.88-2003&amp;rfr_id=ori%3Arid%3Acrossref.org&amp;rfr_dat=cr_pub++0pubmed" rel="external nofollow" target="_blank">burning fossil fuels</a>. “This is very complex in developing countries,” says Sanjay Rajagopalan, a cardiologist and director of the Cardiovascular Research Institute at the Case Western Reserve University School of Medicine. “Urban migration, changes in food and culture, access to care, high levels of pollution—all of these are synergistic and result in much higher levels of hypertension.”
</p>

<p>
	 
</p>

<p>
	In its plan, the WHO makes the point that battling hypertension ought to be a priority for nations not just out of compassion, but to save money as well. More than one-third of deaths from hypertension occur in people under age 70, meaning that their income is lost both to their families and as a contribution to a country’s GDP. In one estimate cited by the agency, spending $1 on hypertension control recovers $18 down the road.
</p>

<p>
	 
</p>

<p>
	It may be a big ask, as the world comes out of Covid, to recommend that societies focus on another overwhelming health problem. But it may also be the right moment to do so. Though Covid killed <a data-event-click='{"element":"ExternalLink","outgoingURL":"https://www.worldometers.info/coronavirus/"}' data-offer-url="https://www.worldometers.info/coronavirus/" href="https://www.worldometers.info/coronavirus/" rel="external nofollow" target="_blank">almost 7 million people</a> worldwide, diseases that are not caused by infectious organisms kill 41 million people every year. And unlike Covid, hypertension is neither a mystery nor a shock; the condition is well understood, and there are affordable drugs that treat it.
</p>

<p>
	 
</p>

<p>
	But as the new plan proposes, it has not been taken seriously enough. “In general, noninfectious diseases have been neglected in the majority of the world,” says Gene Bukhman, a cardiologist who directs the Program on Global Noncommunicable Disease and Social Change at Harvard Medical School. “They’ve been treated as emerging problems, when really they’ve been endemic problems for decades.” Controlling hypertension, in other words, shouldn’t take a program of discovery—just an effort of will.
</p>

<p>
	 
</p>

<p>
	<a href="https://www.wired.com/story/high-blood-pressure-is-the-worlds-biggest-killer-now-theres-a-plan-to-tackle-it/" rel="external nofollow">Source</a>
</p>
]]></description><guid isPermaLink="false">18751</guid><pubDate>Tue, 19 Sep 2023 17:32:36 +0000</pubDate></item><item><title>How scientists are mitigating space travel&#x2019;s risks to the human body</title><link>https://nsaneforums.com/news/general-news/how-scientists-are-mitigating-space-travel%E2%80%99s-risks-to-the-human-body-r18750/</link><description><![CDATA[<h3>
	Spending time in space comes with different health hazards.
</h3>

<div itemprop="articleBody">
	<p>
		When <a href="https://www.space.com/record-17-people-in-earth-orbit-at-once" rel="external nofollow">17 people</a> were in orbit around the Earth all at the same time on May 30, 2023, it set a record. With NASA and other federal space agencies planning more manned missions and commercial companies bringing people to space, opportunities for human space travel are rapidly expanding.
	</p>

	<p>
		 
	</p>

	<p>
		However, traveling to space poses risks to the human body. Since NASA wants to send a manned <a href="https://www.nasa.gov/topics/moon-to-mars" rel="external nofollow">mission to Mars</a> in the 2030s, scientists need to find solutions for these hazards sooner rather than later.
	</p>

	<p>
		 
	</p>

	<p>
		As a kinesiologist who works with astronauts, I’ve spent years <a href="https://scholar.google.com/citations?user=KaVh79oAAAAJ&amp;hl=en" rel="external nofollow">studying the effects</a> space can have on the body and brain. I’m also involved in a NASA project that aims to <a href="https://www.nasa.gov/hrp/5-hazards-of-human-spaceflight" rel="external nofollow">mitigate the health hazards</a> that participants of a future mission to Mars might face.
	</p>

	<h2>
		Space radiation
	</h2>

	<p>
		The Earth has a protective shield called a <a href="https://science.nasa.gov/heliophysics/focus-areas/magnetosphere-ionosphere" rel="external nofollow">magnetosphere</a>, which is the area of space around a planet that is <a href="https://science.nasa.gov/heliophysics/focus-areas/magnetosphere-ionosphere" rel="external nofollow">controlled by its magnetic field</a>. This shield filters out <a href="https://www.nrc.gov/reading-rm/basic-ref/glossary/cosmic-radiation.html" rel="external nofollow">cosmic radiation</a>. However, astronauts traveling farther than the International Space Station will face continuous exposure to this radiation—equivalent to between <a href="https://www.nasa.gov/analogs/nsrl/why-space-radiation-matters" rel="external nofollow">150 and 6,000 chest X-rays</a>.
	</p>

	<p>
		 
	</p>

	<p>
		This radiation can harm the <a href="https://doi.org/10.1080/26896583.2021.1891825" rel="external nofollow">nervous and cardiovascular systems</a> including <a href="https://doi.org/10.1080/26896583.2021.1891825" rel="external nofollow">heart and arteries</a>, leading to cardiovascular disease. In addition, it can <a href="https://doi.org/10.1080/26896583.2021.1885283" rel="external nofollow">make the blood-brain barrier leak</a>. This can expose the brain to chemicals and proteins that are harmful to it—compounds that are safe in the blood but toxic to the brain.
	</p>

	<p>
		 
	</p>

	<div class="ipsEmbeddedVideo" contenteditable="false">
		<div>
			<iframe allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen="" frameborder="0" height="113" src="https://www.youtube-nocookie.com/embed/e9sN9gOEdG4?feature=oembed" title="2-Minute Neuroscience: Blood-Brain Barrier" width="200"></iframe>
		</div>
	</div>

	<p>
		<em>The blood-brain barrier keeps compounds flowing through your circulatory system out of your brain.</em>
	</p>

	<p>
		 
	</p>

	<p>
		NASA is developing technology that can shield travelers on a Mars mission from radiation by building deflecting materials such as Kevlar and polyethylene into <a href="https://www.lockheedmartin.com/en-us/products/astrorad---what-you-wear-in-space-could-save-your-life.html" rel="external nofollow">space vehicles and spacesuits</a>. Certain diets and supplements <a href="https://enterade.com/" rel="external nofollow">such as enterade</a> may also minimize the effects of radiation. Supplements like this, also used in cancer patients on Earth during radiation therapy, can alleviate gastrointestinal side effects of radiation exposure.
	</p>
</div>

<div itemprop="articleBody">
	<h2>
		Gravitational changes
	</h2>

	<p>
		Astronauts have to exercise in space to minimize the muscle loss they’ll face after a long mission. Missions that go as far as Mars will have to make sure <a href="https://www.nasa.gov/mission_pages/station/research/benefits/bone_loss.html" rel="external nofollow">astronauts have supplements</a> such as <a href="https://my.clevelandclinic.org/health/treatments/24753-bisphosphonates" rel="external nofollow">bisphosphonate</a>, which is used to prevent bone breakdown in osteoporosis. These supplements should keep their muscles and bones in good condition over long periods of time spent without the <a href="https://doi.org/10.1038/s41526-021-00158-4" rel="external nofollow">effects of Earth’s gravity</a>.
	</p>

	<p>
		 
	</p>

	<p>
		Microgravity also affects the nervous and circulatory systems. On Earth, your heart pumps blood upward, and specialized valves in your circulatory system keep bodily fluids from pooling at your feet. In the absence of gravity, <a href="https://doi.org/10.3390/life4040621" rel="external nofollow">fluids shift</a> toward the head.
	</p>

	<p>
		 
	</p>

	<p>
		My work and that of others has shown that this results in an expansion of fluid-filled spaces in the middle of the brain. Having extra fluid in the skull and no gravity to “hold the brain down” causes the <a href="https://doi.org/10.1016/j.neubiorev.2020.11.017" rel="external nofollow">brain to sit higher in the skull</a>, compressing the top of the brain against the inside of the skull.
	</p>

	<p>
		 
	</p>

	<p>
		<img alt="kelly-300x451.jpg" class="ipsImage" data-ratio="150.33" height="451" width="300" src="https://cdn.arstechnica.net/wp-content/uploads/2023/09/kelly-300x451.jpg">
	</p>

	<div>
		<em>NASA astronaut Scott Kelly, pictured here, is wearing </em>
	</div>

	<div>
		<em>the Chibis lower body negative pressure suit, which </em>
	</div>

	<div>
		<em>may help counteract the negative effects of </em>
	</div>

	<div>
		<em>gravity-caused fluid shifts in the body.</em>
	</div>

	<div>
		<em>NASA</em>
	</div>

	<div>
		 
	</div>
	These fluid shifts may contribute to <a href="https://doi.org/10.1038/s41526-020-0097-9" rel="external nofollow">spaceflight-associated neuro-ocular syndrome</a>, a condition experienced by many astronauts that affects the <a href="https://doi.org/10.1136/bjo-2022-322892" rel="external nofollow">structure and function of the eyes</a>. The back of the eye can become flattened, and the nerves that carry visual information from the eye to the brain swell and bend. Astronauts can still see, though visual function may worsen for some. Though it hasn’t been well-studied yet, <a href="https://doi.org/10.1038/s41526-020-0097-9" rel="external nofollow">case studies suggest</a> this condition may persist even a few years after returning to Earth.

	<p>
		 
	</p>

	<p>
		Scientists may be able to shift the fluids back toward the lower body using <a href="https://www.nasa.gov/mission_pages/station/research/news/b4h-3rd/hh-dressing-astronauts-for-return" rel="external nofollow">specialized “pants</a>” that pull fluids back down toward the lower body like a vacuum. These pants could be used to redistribute the body’s fluids in a way that is more similar to what occurs on Earth.
	</p>

	<h2>
		Mental health and isolation
	</h2>

	<p>
		While space travel can damage the body, the isolating nature of space travel can also have <a href="https://www.doi.org/10.36131/cnfioritieditore20210502" rel="external nofollow">profound effects on the mind</a>.
	</p>

	<p>
		 
	</p>

	<p>
		Imagine having to live and work with the same small group of people, without being able to see your family or friends for months on end. To learn to manage extreme environments and maintain communication and leadership dynamics, astronauts first undergo team training on Earth.
	</p>

	<p>
		 
	</p>

	<p>
		They spend weeks in either <a href="https://www.nasa.gov/mission_pages/NEEMO/index.html" rel="external nofollow">NASA’s Extreme Environment Mission Operations</a> at the <a href="https://www.nasa.gov/mission_pages/NEEMO/facilities.html" rel="external nofollow">Aquarius Research Station</a>, <a href="https://theconversation.com/how-nine-days-underwater-helps-scientists-understand-what-life-on-a-moon-base-will-be-like-121079" rel="external nofollow">found underwater</a> off the Florida Keys, or mapping and exploring caves with the European Space Agency’s <a href="https://www.esa.int/Science_Exploration/Human_and_Robotic_Exploration/CAVES_and_Pangaea/What_is_CAVES" rel="external nofollow">CAVES program</a>. These programs help astronauts build camaraderie with their teammates and learn how to manage stress and loneliness in a hostile, faraway environment.
	</p>

	<p>
		 
	</p>

	<p>
		Researchers are studying how to best monitor and support <a href="https://www.nasa.gov/feature/conquering-the-challenge-of-isolation-in-space-nasa-s-human-research-program-director" rel="external nofollow">behavioral mental health</a> under these extreme and isolating conditions.
	</p>

	<p>
		 
	</p>

	<p>
		While space travel comes with stressors and the potential for loneliness, astronauts describe experiencing an <a href="https://doi.org/10.1037/cns0000086" rel="external nofollow">overview effect</a>: a sense of awe and connectedness with all humankind. This often happens when viewing Earth from the International Space Station.
	</p>

	<p>
		 
	</p>

	<p>
		<img alt="earthrise-640x465.jpg" class="ipsImage" data-ratio="72.66" height="465" width="640" src="https://cdn.arstechnica.net/wp-content/uploads/2023/09/earthrise-640x465.jpg">
	</p>

	<div>
		<em>Earthrise, a famous image taken during an Apollo mission, shows the Earth from space. While seeing </em>
	</div>

	<div>
		<em>the Earth from afar, many astronauts report feeling an awed "overview effect."</em>
	</div>

	<div>
		<em>NASA</em>
	</div>

	<p>
		 
	</p>

	<p>
		Learning how to support human health and physiology in space also has numerous <a href="https://technology.nasa.gov/" rel="external nofollow">benefits for life on Earth</a>. For example, products that shield astronauts from space radiation and counter its harmful effects on our body can also treat cancer patients receiving radiation treatments.
	</p>

	<p>
		 
	</p>

	<p>
		Understanding how to protect our bones and muscles in microgravity could improve how doctors treat the frailty that often accompanies aging. And space exploration has led to many technological achievements advancing <a href="https://www.nasa.gov/mission_pages/station/research/benefits/water_purification.html" rel="external nofollow">water purification</a> and <a href="https://theconversation.com/landsat-turns-50-how-satellites-revolutionized-the-way-we-see-and-protect-the-natural-world-186986" rel="external nofollow">satellite systems</a>.
	</p>

	<p>
		 
	</p>

	<p>
		Researchers like me who study ways to preserve astronaut health expect our work will benefit people both in space and here at home.
	</p>

	<p>
		 
	</p>

	<p>
		<a href="https://theconversation.com/profiles/rachael-seidler-1458962" rel="external nofollow">Rachael Seidler</a> is professor of applied physiology &amp; kinesiology at the <a href="https://theconversation.com/institutions/university-of-florida-1392" rel="external nofollow">University of Florida</a>
	</p>

	<p>
		 
	</p>

	<p>
		This article is republished from <a href="https://theconversation.com" rel="external nofollow">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/spending-time-in-space-can-harm-the-human-body-but-scientists-are-working-to-mitigate-these-risks-before-sending-people-to-mars-210761" rel="external nofollow">original article</a>.
	</p>
</div>

<p>
	 
</p>

<p>
	<a href="https://arstechnica.com/space/2023/09/how-scientists-are-mitigating-space-travels-risks-to-the-human-body/" rel="external nofollow">Source</a>
</p>
]]></description><guid isPermaLink="false">18750</guid><pubDate>Tue, 19 Sep 2023 17:30:42 +0000</pubDate></item><item><title>More than half of Americans plan to get updated COVID shot</title><link>https://nsaneforums.com/news/general-news/more-than-half-of-americans-plan-to-get-updated-covid-shot-r18737/</link><description><![CDATA[<h3>
	There's a sharp partisan divide, but interest blows away uptake of the last booster.
</h3>

<div itemprop="articleBody">
	
	<p>
		Despite last year's abysmal fall booster campaign, more than half of US adults say they plan to get <a href="https://arstechnica.com/health/2023/09/updated-covid-boosters-get-green-light-from-fda-ahead-of-cdc-review/" rel="external nofollow">the latest COVID-19 vaccine</a>, which was <a href="https://arstechnica.com/health/2023/09/everyone-should-get-a-covid-booster-this-fall-cdc-says/" rel="external nofollow">greenlit by federal authorities last week</a>.
	</p>

	<p>
		 
	</p>

	<p>
		According to polling by <a href="https://www.politico.com/news/2023/09/15/poll-covid-booster-democrats-00116123" rel="external nofollow">Politico</a> and <a href="https://pro.morningconsult.com/analysis/covid-19-booster-vaccine-poll" rel="external nofollow">Morning Consult</a>, 57 percent of registered voters said they would "probably" or "definitely" get the vaccine, which is a monovalent shot that targets the recent omicron subvariant, XBB.1.5. Specifically, 20 percent of voters said they would probably get the shot, while 37 percent said they definitely would.
	</p>

	<p>
		 
	</p>

	<p>
		Collectively, that's nearly triple the actual uptake of <a href="https://arstechnica.com/science/2022/09/fda-authorizes-omicron-targeting-covid-boosters-from-moderna-and-pfizer/" rel="external nofollow">last year's updated vaccine, a bivalent shot</a> that targeted both the ancestral strain and the omicron subvariants BA.4/5. In total, <a href="https://covid.cdc.gov/covid-data-tracker/#vaccination-states-jurisdictions" rel="external nofollow">20.5 percent of people aged 18 or older received that shot</a>, according to the most recent data from the Centers for Disease Control and Prevention. Overall, 17 percent of the US population got the bivalent booster.
	</p>

	<p>
		 
	</p>

	<p>
		The latest polling results largely square with <a href="https://www.kff.org/coronavirus-covid-19/press-release/half-of-the-public-would-likely-get-an-annual-covid-19-vaccine-offered-like-a-flu-shot/" rel="external nofollow">a KFF COVID-19 vaccine monitor poll reported in April</a> that found that 53 percent of Americans would likely get an annual COVID-19 shot if it was offered similar to an annual flu shot. Nearly a third, 32 percent, said they would be "very likely" to do so.
	</p>

	<p>
		 
	</p>

	<p>
		While the boosted interest in the latest vaccine is likely heartening to officials, the polling still shows a dangerous partisan divide that has plagued public health responses throughout the pandemic. In the Politico/Morning Consult poll, 79 percent of Democrats said they planned on getting the updated shot, but only 39 percent of Republicans said the same.
	</p>

	<p>
		 
	</p>

	<p>
		That leaves 61 percent of Republicans who indicated they would not seek out the new vaccine. Forty-four percent of Republicans reported they "definitely" will not get the booster, while 17 percent said they "probably" will not. Independents, meanwhile, were split, with 48 percent saying they would "probably" or "definitely" get vaccinated.
	</p>

	<p>
		 
	</p>

	<p>
		Politico noted that the fall vaccine rollout, which is now underway, comes amid a contentious GOP presidential primary, in which some candidates have already expressed their opposition to COVID-19 health measures.
	</p>

	<p>
		 
	</p>

	<p>
		Most notably, Florida Gov. Ron DeSantis and his controversial, hand-picked surgeon general, Joseph Ladapo, have continued to <a href="https://arstechnica.com/science/2023/03/florida-surgeon-general-wrong-on-vaccines-and-bad-at-his-job-cdc-and-fda-say/" rel="external nofollow">spread vaccine misinformation, falsehoods, and skepticism</a>. Last week, Ladapo warned healthy people under the age of 65 <a href="https://www.politico.com/news/2023/09/13/florida-surgeon-general-fda-covid-booster-00115781" rel="external nofollow">against getting this year's update booster</a>, contradicting the CDC. Ladapo had previously made unfounded safety claims about mRNA COVID-19 vaccines based on <a href="https://arstechnica.com/science/2023/02/floridas-polarizing-surgeon-general-accused-of-manipulating-covid-data/" rel="external nofollow">a dubious study</a>. A subsequent investigation into the study determined <a href="https://arstechnica.com/science/2023/04/florida-officials-deleted-data-stats-from-dubious-covid-analysis-report/" rel="external nofollow">key data and statistics on vaccine safety had been deleted from the analysis</a>.
	</p>

	<p>
		 
	</p>

	<p>
		As before, CDC officials are rebuffing Ladapo's latest remarks. "Any efforts to undercut vaccine uptake are unfounded and frankly dangerous," CDC Director Mandy Cohen told Politico.
	</p>

	<p>
		 
	</p>
</div>

<p>
	<a href="https://arstechnica.com/health/2023/09/more-than-half-of-americans-plan-to-get-updated-covid-shot/" rel="external nofollow">Source</a>
</p>
]]></description><guid isPermaLink="false">18737</guid><pubDate>Tue, 19 Sep 2023 01:46:04 +0000</pubDate></item><item><title>Ski Resorts Are Giving Up on Snow</title><link>https://nsaneforums.com/news/general-news/ski-resorts-are-giving-up-on-snow-r18736/</link><description><![CDATA[<p>
	<span style="font-size:22px;"><strong>With natural snow becoming scarcer and artificial powder woefully unsustainable, Europe’s mountain resorts are starting to look at life beyond downhill skiing.</strong></span>
</p>

<p>
	 
</p>

<p>
	<strong>IT’S LATE AUGUST</strong>, and Italy is in the middle of its third record-setting heat wave of the summer, but at the bottom of the slopes in Fai della Paganella, a small ski resort in the Dolomites, a queue is forming for the chairlift. Instead of ski jackets and bobble hats, the people waiting are dressed like 21st-century gladiators—with knees, chests, and elbows covered in plastic body armor. Instead of skis, their weapons of choice are downhill mountain bikes: elaborate machines that look like off-road motorcycles and often cost as much as a small car.
</p>

<p>
	 
</p>

<p>
	Scenes like this are becoming increasingly common across Europe as ski resorts, feeling the impact of the climate crisis, look to diversify their appeal and tap into alternative sources of income. Paganella is remarkable in that it now attracts more bikers in summer than skiers in winter. “Sixty-five percent of our visitors now come outside of the ski season—between April and November,” says Luca d’Angelo, the resort’s destination manager.
</p>

<p>
	 
</p>

<p>
	“The switch,” as d’Angelo calls it, “came in 2018 or 2019.” It wasn’t originally part of some master plan, he explains. When the resort first opened a lift for mountain bikers as an experiment in 2011, “my colleagues weren’t thinking necessarily about climate change as a theme,” he says. But as snowfall becomes less and less reliable, Paganella’s decision to invest in mountain-biking infrastructure looks increasingly prescient.
</p>

<p>
	 
</p>

<p style="text-align:center;">
	<img alt="Ski-Resorts-Snow-Alfie-Bacon-Science-IMG" class="ipsImage" data-ratio="75.10" height="491" width="720" src="https://media.wired.com/photos/6504ec0efa3276aded9d6a03/master/w_1280,c_limit/Ski-Resorts-Snow-Alfie-Bacon-Science-IMG_5463.jpg" />
</p>

<p style="text-align:center;">
	<span style="font-size:12px;"><em>A mountain biker riding the Paganella bike park.PHOTOGRAPH: ALFIE BACON</em></span>
</p>

<p style="text-align:center;">
	 
</p>

<p>
	The science around what the climate crisis means for ski resorts makes for grim reading. In a paper published in Nature Climate Change in August 2023, a team lead by Hugues François of the University of Grenoble projected the “snow supply risk” for 2,234 European ski resorts, based on global average temperature increases of 2 and 4 degrees Celsius. Under the 4-degree warming scenario, they found that 98 percent of the resorts would face “a very high risk” to their natural snow supply. Even if global temperature rises can be kept to 2 degrees (a threshold likely to be exceeded by the middle of this century), more than half of the places the team looked at would struggle for natural snow. 
</p>

<p>
	 
</p>

<p>
	Many ski resorts, of course, now rely on artificial snowmaking to make up for natural shortfalls: 90 percent of ski slopes in Italy, 70 percent in Austria, 53 percent in Switzerland, 37 percent in France, and 25 percent in Germany are now covered by snow cannons, according to data released by the the Swiss lift operators association, Seilbahnen, in 2021. But snowmaking is no silver bullet. For the purposes of the study, François’ team assumed that ski resorts could cover, on average, 50 percent of their slopes with cannons. They found that 71 percent would still face a snow supply risk under the 4-degrees warming scenario, and 27 percent under 2 degrees. Snowmaking also requires huge amounts of water and energy, ultimately contributing to the crisis it’s designed to solve. 
</p>

<p>
	 
</p>

<p>
	For Luca Albrisi, the whole idea that ski resorts could continue to operate as they currently do, plugging any gaps with artificial snow, is fundamentally flawed. An environmental activist and filmmaker from the Italian village of Pejo, Albrisi is the lead author of the Clean Outdoor Manifesto. This mission statement, cosigned by thousands of outdoor industry professionals since its launch in 2020, has subsequently coalesced into an influential activist group. To have a future, he believes mountain communities need to escape from “the current model of development,” which is dangerously dependent “on what’s essentially a tourism monoculture based on downhill skiing.” 
</p>

<p>
	 
</p>

<p>
	“Of course, we recognize that in the past, skiing allowed many valleys [across the Alps] to lift themselves out of poverty,” Albrisi says. “But it’s obvious that it’s a model that’s now obsolete.” He argues that ski resorts should preserve any untouched terrain they have left for low-impact activities like snowshoeing or ski touring (where participants climb the mountain under their own steam), instead of spending millions on new skiing infrastructure—clearing forests for new lifts and pistes and installing the artificial lakes and subterranean pipe-work for the snow cannons now needed to keep them operational.
</p>

<p>
	 
</p>

<p>
	On March 12, 2023, this led to the counterintuitive sight of over a thousand people—including ski instructors, alpine guides, and other mountain professionals—coming together to protest against proposed new ski facilities at 11 sites in Italy. Organized by Outdoor Manifesto signatories, in collaboration with other groups, the demonstration’s slogan, “Reimagine Winter: No more new lifts,” has particular resonance in the peninsula, where, according to detailed research by Legambiente, Italy’s leading environmental NGO, there are now 249 ski lifts lying abandoned and unused because of climate change. The group also identified 138 more lifts that have been “temporarily” closed for at least one winter, and a further 84 which they classified as “partly open, partly closed”—all of which are at risk of permanent closure.
</p>

<p>
	 
</p>

<p>
	The larger issue, according to Vanda Bonardo, lead author of the Legambiente report, is the misallocation of resources. “Several of those which are ‘partly open, partly closed’ are only still standing because of public money—our money,” she explains. “This spring, Italy’s tourism minister, Daniela Santanchè, allocated 210 million euros ($225 million) just to support this decaying industry, while other sectors which exist in the shadow of skiing receive just crumbs,” Bonardo says. “That’s not right, given that it’s our money, and that this model of skiing has no future.” 
</p>

<p>
	 
</p>

<p>
	As alternatives, Bonardo points to places like Panarotta 2002, a low-lying Italian ski resort that closed its lifts last winter, and the proposal to rebrand it as “Panarotta Skialp-Natur”—a destination dedicated to ski touring in winter and hiking in summer. A similar initiative has proved successful, albeit on a small scale, in the nearby ski resort of Gaver. The lifts there closed for the final time at the end of the 2013–14 season, and the skeletal pylons still strewn across the hillside have long since turned to rust. But thanks largely to the efforts of Stefano Marca, the enterprising local owner of the Blumonbreak Hotel, Gaver’s slopes now attract thousands of ski tourers on winter weekends.
</p>

<p>
	 
</p>

<p style="text-align:center;">
	<img alt="Gaver-Ski-Touring-Resort-Tristan-Kennedy" class="ipsImage" data-ratio="75.10" height="479" width="720" src="https://media.wired.com/photos/6504ec0f3f0b6cf71150b745/master/w_1280,c_limit/Gaver-Ski-Touring-Resort-Tristan-Kennedy-9627-Science.jpg" />
</p>

<p style="text-align:center;">
	<span style="font-size:12px;"><em>Ski touring at Gaver ski resort.PHOTOGRAPH: TRISTAN KENNEDY</em></span>
</p>

<p style="text-align:center;">
	 
</p>

<p>
	Gaver’s new business model still relies on there still being some snow (if not the consistent coverage needed to keep a lift operation economically viable). But there are now some “ski” resorts where skiing no longer features as part of the business plan at all. When Felix Saller met his partner, Christin Hellermann, at a mountain-bike event, the small ski hill her family owned near Dortmund, Germany, hadn’t had enough snow to open for over a decade. “They opened for two weekends in 2017, when there was really a lot of snow,” Saller says, “but they hadn’t opened at all for five years before that, and it really stopped being a business around 2000 or 2001.”
</p>

<p>
	 
</p>

<p>
	With his background in the bike industry, Saller realized the place had potential. In July 2022, three years after writing their first business plan, he and Hellermann reopened the resort as Green Hill Bike Park. Their total investment, Saller estimates, was just 2 million euros. Converting the main ski lift, he says, couldn’t have been easier. “There’s a simple hook system called EasyLoop, invented by a guy in Austria, which allows you to convert any drag lift [which tows skiers and snowboarders up the mountain] for bikes.”
</p>

<p>
	 
</p>

<p>
	While the old family-run ski resort was very much a small-scale affair, the new bike park is anything but. “We obviously haven’t had a whole summer season yet,” Felix says, “but in the last half year we had 30,000 mountain bikers, so in a whole season it will be 50 or 60,000.” In August 2023, they hosted the Swatch Nines, one of the most prestigious international contests in the world of mountain biking—a huge coup for such a new business. “I don’t have the latest ticket sales summary, but by my estimate, around 7,000 people visited on three days that weekend,” Saller says.
</p>

<p>
	 
</p>

<p>
	Unsurprisingly, this successful revival of a once-dead resort has turned heads within the industry. “We have a lot of requests from other ski resorts—in Switzerland, Austria, Poland, and also here in Germany—asking us to bring our ideas there,” Saller says. “I would say the next years will be a boom for mountain bike parks, especially for all the ski areas under 1,500 meters.” 
</p>

<p>
	 
</p>

<p>
	In Fai della Paganella, where the lifts top out at 2,100 meters, Luca d’Angelo isn’t worried about the winter season disappearing completely just yet.
</p>

<p>
	“It’s still very important,” he says, pointing out that lift ticket sales are still worth 12 million euros in winter, compared to 2.5 million in summer. “But pay attention,” he says, explaining that when you factor in the expense of electricity needed for snowmaking, and the relative costs of preparing a mountain bike trail versus a ski piste, the profit margins even out—or even swing the other way. “It’s not an official calculation, but we estimate that every 1 euro a biker spends is worth six or seven times the euro spent by a skier,” he says. These days, Paganella markets itself less as a ski resort, and more as what d’Angelo calls “a year-round destination.”
</p>

<p>
	 
</p>

<p>
	For the first time this year, he explains proudly, the transition between seasons was seamless. Paganella’s top lifts closed for skiing on April 9, and “that same day, we opened lifts lower down the valley for mountain biking.” The swish of skis on snow giving way to the whir of bike cassettes made it obvious where the future lies.
</p>

<p>
	 
</p>

<p>
	<strong><a href="https://www.wired.com/story/ski-adaptations-climate-change-paganella-italy/" rel="external nofollow">Source</a></strong>
</p>
]]></description><guid isPermaLink="false">18736</guid><pubDate>Mon, 18 Sep 2023 23:29:04 +0000</pubDate></item><item><title>Mass Extinction: Entire Branches on Tree of Life Are Dying, Scientists Warn</title><link>https://nsaneforums.com/news/general-news/mass-extinction-entire-branches-on-tree-of-life-are-dying-scientists-warn-r18735/</link><description><![CDATA[<p>
	Like the comet striking the dinosaurs – in slower motion, but just as deadly – human activity is hacking off entire branches from the tree of life, a new study confirms.
</p>

<p>
	 
</p>

<p>
	"It is changing the trajectory of evolution globally and destroying the conditions that make human life possible," ecologists warn in their new paper.
</p>

<p>
	 
</p>

<p>
	"It is an irreversible threat to the persistence of civilization and the livability of future environments for Homo sapiens."
</p>

<p>
	 
</p>

<p>
	Over the past few months the sixth mass extinction has become devastatingly visible.
</p>

<p>
	 
</p>

<div class="ipsEmbeddedOther" contenteditable="false">
	<iframe allowfullscreen="" data-controller="core.front.core.autosizeiframe" data-embedid="embed7901277273" src="https://nsaneforums.com/index.php?app=core&amp;module=system&amp;controller=embed&amp;url=https://twitter.com/Debbie_banks30/status/1683361936434515969?ref_src=twsrc%255Etfw%257Ctwcamp%255Etweetembed%257Ctwterm%255E1683361936434515969%257Ctwgr%255E04ba5ce5528d155caf660caff300eec979cb390e%257Ctwcon%255Es1_%26ref_url=https://www.sciencealert.com/mass-extinction-entire-branches-on-tree-of-life-are-dying-scientists-warn" style="height:879px;"></iframe>
</div>

<p>
	We've witnessed mass seabird deaths, shores have been littered with droves of dead fish, and sea lions poisoned by heat-induced algal blooms.
</p>

<p>
	 
</p>

<p>
	Last year entire populations of penguins failed to breed and for years now researchers have been investigating an alarming reduction in insect life.
</p>

<p>
	 
</p>

<p>
	So ecologist Gerardo Ceballos from the National Autonomous University of Mexico and Stanford University conservation biologist Paul Ehrlich assessed species extinctions since 1500 CE and compared those through the past 500 million years. They found we've driven 73 genera of back-boned animals to extinction during the last 500 years.
</p>

<p>
	 
</p>

<p>
	Genus is the taxonomic classification just above species, grouping together the most closely related organisms, much like siblings, in a family tree.
</p>

<p>
	This rate is 35 times higher than previous genus-level extinctions.
</p>

<p>
	 
</p>

<p style="text-align:center;">
	<img alt="TreeOfLife.jpg" class="ipsImage" data-ratio="84.11" height="540" width="409" src="https://www.sciencealert.com/images/2023/09/TreeOfLife.jpg" />
</p>

<p style="text-align:center;">
	<span style="font-size:12px;"><em>Simple schematic representation of the mutilation of the Tree of life because of generic extinctions and extinction risks. The bottom half of the tree depicted as dead branches shows examples of the extinct genera, and the upper half shows examples of genera at risk of extinction. (Ceballosa &amp; Ehrlich, PNAS, 2023)</em></span>
</p>

<p style="text-align:center;">
	 
</p>

<p>
	Without human influence, it would have taken 18,000 years for the same number of genera to have met their end. Other studies have also found similarly high extinction rates for plant, fungi, and invertebrate life as well.
</p>

<p>
	 
</p>

<p>
	"[The sixth mass extinction] is causing rapid mutilation of the tree of life, where entire branches (collections of species, genera, families, and so on) and the functions they perform are being lost," explain the researchers.
</p>

<p>
	 
</p>

<div class="ipsEmbeddedOther" contenteditable="false">
	<iframe allowfullscreen="" data-controller="core.front.core.autosizeiframe" data-embedid="embed5953529092" src="https://nsaneforums.com/index.php?app=core&amp;module=system&amp;controller=embed&amp;url=https://twitter.com/nytimes/status/1667889436313493504?ref_src=twsrc%255Etfw%257Ctwcamp%255Etweetembed%257Ctwterm%255E1667889436313493504%257Ctwgr%255E04ba5ce5528d155caf660caff300eec979cb390e%257Ctwcon%255Es1_%26ref_url=https://www.sciencealert.com/mass-extinction-entire-branches-on-tree-of-life-are-dying-scientists-warn" style="height:879px;"></iframe>
</div>

<p>
	The biosphere we live within is extremely interconnected, so loss of species groups that play particular functions within their interconnected-living web can have severe cascading consequences.
</p>

<p>
	 
</p>

<p>
	"We and all other species have evolved together thriving within a stable tree of life," Ceballos and Ehrlich say, so the loss of entire ecological functions performed by groups of species directly impacts us too.
</p>

<p>
	 
</p>

<p>
	For example, the loss of mosquito-devouring frogs has occurred alongside increasing malaria infections in Central America.
</p>

<p>
	 
</p>

<div class="ipsEmbeddedOther" contenteditable="false">
	<iframe allowfullscreen="" data-controller="core.front.core.autosizeiframe" data-embedid="embed6919139033" src="https://nsaneforums.com/index.php?app=core&amp;module=system&amp;controller=embed&amp;url=https://twitter.com/DrTOMontgomery/status/1657767761374740480?ref_src=twsrc%255Etfw%257Ctwcamp%255Etweetembed%257Ctwterm%255E1657767761374740480%257Ctwgr%255E04ba5ce5528d155caf660caff300eec979cb390e%257Ctwcon%255Es1_%26ref_url=https://www.sciencealert.com/mass-extinction-entire-branches-on-tree-of-life-are-dying-scientists-warn" style="height:779px;"></iframe>
</div>

<p>
	What's more, this rate of genera loss is set to increase, Ceballos and Ehrlich calculate. If we continue on our current trajectory and all current endangered genera are snuffed from existence by 2100, the equivalent 300-year-loss since 1800 would have taken 106,000 years at normal background levels of extinction.
</p>

<p>
	 
</p>

<p>
	The most vulnerable species are usually the most unique, yet overlooked on the planet. Along with them we'll lose millions of years of evolutionary history, which can never be repeated, as well as the loss of critical functions they performed that helped keep all the surrounding biological cycles chugging on like a well oiled machine.
</p>

<p>
	 
</p>

<p>
	"[It] required millions of years for evolution to generate functional replacements for the extinct organisms," Ceballos and Ehrlich note.
</p>

<p>
	 
</p>

<p>
	Climate change alone is creating a massive destabilization across these systems, scattering critical timing of ecosystem services like pollination, reducing the types of species and allowing new ones to invade more easily.
</p>

<p>
	 
</p>

<p>
	Another new study has documented these exact processes in an Arizonian dryland stream between 1985 and 2019.
</p>

<p>
	 
</p>

<p>
	"Our study provides evidence of climate change-induced modifications of mechanisms underpinning long-term community stability, resulting in an overall destabilizing effect," Junna Wang and team write.
</p>

<p>
	 
</p>

<div class="ipsEmbeddedOther" contenteditable="false">
	<iframe allowfullscreen="" data-controller="core.front.core.autosizeiframe" data-embedid="embed9935570172" src="https://nsaneforums.com/index.php?app=core&amp;module=system&amp;controller=embed&amp;url=https://twitter.com/FOX26Houston/status/1667375529341616130?ref_src=twsrc%255Etfw%257Ctwcamp%255Etweetembed%257Ctwterm%255E1667375529341616130%257Ctwgr%255E04ba5ce5528d155caf660caff300eec979cb390e%257Ctwcon%255Es1_%26ref_url=https://www.sciencealert.com/mass-extinction-entire-branches-on-tree-of-life-are-dying-scientists-warn" style="height:807px;"></iframe>
</div>

<p>
	Yet the sixth mass extinction is far bigger than the massive cluster-catastrophe of climate change alone.
</p>

<p>
	 
</p>

<p>
	From plastics, to pesticides, habitat loss and poaching, we're not allowing the life around us to catch a break.
</p>

<p>
	 
</p>

<p>
	"Immediate political, economic, and social efforts of an unprecedented scale are essential if we are to prevent these extinctions and their societal impacts," say Ceballos and Ehrlich.
</p>

<p>
	 
</p>

<p>
	Unlike the comet that eliminated non-avian dinosaurs, we're conscious of our actions and we do have the ability to change course.
</p>

<p>
	 
</p>

<p>
	"What happens in the next two decades will very likely define the future of biodiversity and H. sapiens," the team concludes.
</p>

<p>
	 
</p>

<p>
	This research was published in <span style="color:#2980b9;"><em>PNAS</em></span>.
</p>

<p>
	 
</p>

<p>
	<strong><a href="https://www.sciencealert.com/mass-extinction-entire-branches-on-tree-of-life-are-dying-scientists-warn" rel="external nofollow">Source</a></strong>
</p>
]]></description><guid isPermaLink="false">18735</guid><pubDate>Mon, 18 Sep 2023 22:47:21 +0000</pubDate></item><item><title>Here&#x2019;s what the latest Mars rover has learned so far</title><link>https://nsaneforums.com/news/general-news/here%E2%80%99s-what-the-latest-mars-rover-has-learned-so-far-r18720/</link><description><![CDATA[<h3>
	Catch up on the Mars 2020 mission in 2023.
</h3>

<div itemprop="articleBody">
	
	<p>
		It’s easy to take it for granted, but we’re driving around on freakin’ Mars right now.
	</p>

	<p>
		 
	</p>

	<p>
		We’ve done this a few times before, sure, but it remains one of humankind’s most impressive technological feats. The latest rover to continue our presence on the red planet is Perseverance, the star of the <a href="https://mars.nasa.gov/mars2020/" rel="external nofollow">Mars 2020</a> mission that launched in July of that year and landed in February of 2021.
	</p>

	<p>
		 
	</p>

	<p>
		It has now been busy roving for over two years. News of what we’re discovering—beyond the stream of <a href="https://mars.nasa.gov/mars2020/multimedia/raw-images/" rel="external nofollow">photos</a>—tends to come in discrete bits that can be hard to connect into a bigger picture if you aren’t <a href="https://mars.nasa.gov/mars2020/mission/where-is-the-rover/" rel="external nofollow">following closely</a>. Consider this your wide-angle recap.
	</p>

	<p>
		 
	</p>

	<p>
		Like other rovers, Perseverance is bristling with science instruments. It has cameras of multiple kinds used both for general imagery and spectral analysis that can identify minerals. That latter function is supplemented by an additional X-ray instrument. Perseverance also has a ground-penetrating radar instrument that can reveal layering hidden below the surface. More invasively, there is a drill on the end of the rover’s robotic arm. This is used to grind clean (what geologists call “fresh”) spots for analysis, but it can also core out small cylindrical <a href="https://mars.nasa.gov/mars-rock-samples/" rel="external nofollow">rock samples</a>—hopefully to be retrieved and returned to Earth by a future mission.
	</p>

	<p>
		 
	</p>

	<p>
		It's not all about the rocks, though. Perseverance has a <a href="https://mars.nasa.gov/mars2020/mission/weather/" rel="external nofollow">weather</a> module tracking atmospheric conditions and airborne dust. And it has a friend—the <a href="https://mars.nasa.gov/technology/helicopter/#Helicopter-Highlights" rel="external nofollow">Ingenuity helicopter</a> has wildly exceeded its pilot-testing goal and is <a href="https://mars.nasa.gov/technology/helicopter/#Flight-Log" rel="external nofollow">still flying</a> in short hops to keep up with the rover.
	</p>

	<p>
		 
	</p>

	<p>
		This mission set down in Jezero Crater, which was chosen because rocks resembling a river delta are draped over its rim—indicating that flowing water might have met a lake here in the past. It’s the perfect environment to study the history of water on Mars and the possibility of life associated with it. There’s only so much science you can do from orbit. To untangle the forensic clues that remain here, you need to get down on the ground.
	</p>

	<h2>
		First stop: Crater
	</h2>

	<p>
		The first years on Mars were spent investigating the floor of Jezero Crater. The type of rock that would be found here was actually somewhat ambiguous from orbit. There was clearly some igneous rock, either from volcanic magma or a molten pool created by the meteorite impact that formed the crater. But some also expected to see sedimentary rock representing the bottom of a lake that called the crater home.
	</p>

	<p>
		 
	</p>

	<p>
		It turned out to just be igneous basalt under the blanket of wind-blown dust, and any lake-bottom sediments that existed here must have long since eroded away. You might think that’s disappointing—like the pharaoh’s tomb was already cleaned out by grave robbers—but this is actually one of the better looks we’ve gotten at Mars’ igneous bedrock. Missions have often targeted pockets of notable sedimentary rock, with only scattered bits of the much more common igneous rock on display.
	</p>

	<p>
		 
	</p>

	<p>
		The Martian meteorites we’ve found on Earth—chipped off the red planet during large impact events—have only given us literal fragments of the big picture. If we successfully return the eight rock samples collected from the crater floor, this opportunity to cruise around on intact igneous bedrock could answer a lot of questions raised by the meteorites.
	</p>

	<p>
		 
	</p>

	<p>
		In this case, the <a href="https://dx.doi.org/10.1126/sciadv.abo3399" rel="external nofollow">science team has divided</a> the crater floor rocks they observed into two major layers. The upper one, called the Máaz formation, appears to have formed from lavas. Some portions exhibit a texture like the wrinkled (or “rope-like”) lavas we see in Hawaii. In other areas, the rock happens to stick up through the red dust as flat polygons resembling pavers in a garden, or as taller, boulder-sized blocks.
	</p>

	<p>
		 
	</p>

	<div>
		<div>
			<div>
				<ul>
					<li data-responsive="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_map_wide-980x682.jpg 1080, https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_map_wide-1440x1001.jpg 2560" data-src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_map_wide.jpg" data-sub-html="#caption-1963650" data-thumb="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_map_wide-150x150.jpg">
						<figure>
							<div>
								<img alt="perseverance_map_wide-1440x1001.jpg" class="ipsImage" data-ratio="75.10" height="500" width="720" src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_map_wide-1440x1001.jpg">
							</div>

							<figcaption id="caption-1963650">
								<div>
									<em>Map showing the path of Perseverance (and Ingenuity), with red markers for sample locations, as of August 26, 2023.</em>
								</div>

								<div>
									<em><a href="https://mars.nasa.gov/mars2020/mission/where-is-the-rover/" rel="external nofollow">NASA</a></em>
								</div>
							</figcaption>
						</figure>
					</li>
					<li data-responsive="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_gal1_PIA24746_MAIN_FINAL_Sol0136P_zcam08143_Z048_R0N-980x444.jpg 1080, https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_gal1_PIA24746_MAIN_FINAL_Sol0136P_zcam08143_Z048_R0N-1440x652.jpg 2560" data-src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_gal1_PIA24746_MAIN_FINAL_Sol0136P_zcam08143_Z048_R0N.jpg" data-sub-html="#caption-1963647" data-thumb="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_gal1_PIA24746_MAIN_FINAL_Sol0136P_zcam08143_Z048_R0N-150x150.jpg">
						<figure>
							<div>
								<img alt="perseverance_gal1_PIA24746_MAIN_FINAL_So" class="ipsImage" data-ratio="75.10" height="326" width="720" src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_gal1_PIA24746_MAIN_FINAL_Sol0136P_zcam08143_Z048_R0N-1440x652.jpg">
							</div>

							<figcaption id="caption-1963647">
								<div>
									<em>The view on the crater floor.</em>
								</div>

								<div>
									<em><a href="https://mars.nasa.gov/resources/26066/perseverance-scouts-first-sampling-location/" rel="external nofollow">NASA/JPL-Caltech/ASU/MSSS</a></em>
								</div>
							</figcaption>
						</figure>
					</li>
					<li data-responsive="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_bell_sciadv_f7-980x481.jpg 1080, https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_bell_sciadv_f7-1440x707.jpg 2560" data-src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_bell_sciadv_f7.jpg" data-sub-html="#caption-1963648" data-thumb="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_bell_sciadv_f7-150x150.jpg">
						<figure>
							<div>
								<img alt="perseverance_bell_sciadv_f7-1440x707.jpg" class="ipsImage" data-ratio="75.10" height="353" width="720" src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_bell_sciadv_f7-1440x707.jpg">
							</div>

							<figcaption id="caption-1963648">
								<div>
									<em>Lava flow textures in the Máaz formation.</em>
								</div>

								<div>
									<em><a href="https://www.science.org/doi/10.1126/sciadv.abo4856" rel="external nofollow">Bell et al./Science Advances</a></em>
								</div>
							</figcaption>
						</figure>
					</li>
					<li data-responsive="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_farley_science.abo2196-f4-980x616.jpg 1080, https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_farley_science.abo2196-f4-1440x904.jpg 2560" data-src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_farley_science.abo2196-f4-scaled.jpg" data-sub-html="#caption-1963649" data-thumb="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_farley_science.abo2196-f4-150x150.jpg">
						<figure>
							<div>
								<img alt="perseverance_farley_science.abo2196-f4-1" class="ipsImage" data-ratio="75.10" height="452" width="720" src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_farley_science.abo2196-f4-1440x904.jpg">
							</div>

							<figcaption id="caption-1963649">
								<div>
									<em>Layering and close-up texture of the Séítah formation.</em>
								</div>

								<div>
									<em><a href="https://doi.org/10.1126/science.abo2196" rel="external nofollow">Farley et al./Science</a></em>
								</div>
							</figcaption>
						</figure>
					</li>
				</ul>
			</div>
		</div>
	</div>

	<p>
		The lower Séítah formation is distinct in both texture and minerals. It stands out from its surroundings due to its thin layering and visible, closely packed crystals. And while the Máaz rocks contain lots of the mineral feldspar, Séítah's rocks are dominated by olivine, instead.
	</p>

	<p>
		 
	</p>

	<p>
		This looks like what geologists call “<a href="https://en.wikipedia.org/wiki/Cumulate_rock" rel="external nofollow">cumulate</a>”—the magmatic equivalent of the gritty dregs in your coffee cup. Because different minerals crystallize at different temperatures (yes, molten rock has a freezing point), minerals like olivine that crystallize early can settle to the bottom of a magma body and accumulate. On Earth, this pattern can be seen in magma chambers that cooled underground or in some sufficiently thick lavas.
	</p>

	<p>
		 
	</p>
</div>

<div itemprop="articleBody">
	<p>
		This leaves space for a few possible interpretations. It could be that a thick lake of lava formed from the impact in this crater or another nearby; alternatively, this is a single, thick volcanic lava flow. But it’s also possible that these layers represent separate volcanic events in a sequence, with erosion uncovering an old magma chamber before new lava flows buried it again. These are the kinds of details that returned samples could help us pin down. Dating the rocks could show if they formed at the same time, and finer chemical analysis could reveal how closely related they are.
	</p>

	<p>
		 
	</p>

	<p>
		Since these rocks are billions of years old, their origin story is not the only one they can tell. Data collection is also focused on how they have been altered by time and the elements—most notably water. While lake sediment is nowhere to be seen, there is still some evidence hinting at interactions with water.
	</p>

	<p>
		 
	</p>

	<p>
		Alongside the minerals that are characteristic of a basalt lava, Perseverance has <a href="https://www.science.org/doi/10.1126/science.abo2196" rel="external nofollow">spotted minerals</a> that form as the original rock reacts with chemical visitors. Magnesium and iron from crystals of olivine, for example, have ended up in carbonate—a common product of weathering facilitated by water. Similarly, some small open spaces in the basalts have been filled in with sulfate and perchlorate salts. These could precipitate in areas where shallow, salty waters are evaporating or seeping into the ground.
	</p>

	<p>
		 
	</p>

	<p>
		But while it’s true that clues like these are present, it’s also true that they aren’t as common as they could be. So, as <a href="https://www.science.org/doi/10.1126/sciadv.abo4856" rel="external nofollow">one paper</a> notes, either the lake was too short-lived (and the climate too cold) to alter these rocks further, or the erosion that removed lake-bottom sediments also removed the most altered bedrock. That’s often an important forensic question in geology—do you have all the evidence, or has some been erased by later events?
	</p>

	<p>
		 
	</p>

	<p>
		Either way, the evidence that does exist is interesting enough, and samples that return to Earth would be examined for any signs that life existed in these potentially habitable conditions.
	</p>

	<p>
		 
	</p>

	<p>
		<img alt="perseverance_farley_science.abo2196-f7-6" class="ipsImage" data-ratio="40.31" height="258" width="640" src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_farley_science.abo2196-f7-640x258.jpg">
	</p>

	<div>
		<em>Samples drilled in crater floor rocks.</em>
	</div>

	<div>
		<em>Farley et al./Science</em>
	</div>

	<h2>
		Movin’ on up
	</h2>

	<p>
		In April 2022, the mission turned to its second phase, referred to as the Delta Front Campaign. As Perseverance made its way toward the edge of the crater, its eyes also shifted to the rocks above the crater floor. These are what looked from orbit like river delta deposits, built up as sediment dropped from flowing water that slowed to a halt.
	</p>

	<p>
		 
	</p>

	<p>
		Photos taken en route <a href="https://hal.science/hal-03594054" rel="external nofollow">showed apparent layering</a> in the nearest outcrops. In fact, there was a familiar-looking sandwich of layers typical of a <a href="https://en.wikipedia.org/wiki/River_delta#Gilbert_deltas" rel="external nofollow">rocky river delta</a>. As these deltas grow over time, they push farther into the body of standing water, building over the top of sediments laid down earlier. At any one point in time, you can divide the area between the river’s mouth and the open water into three zones. Starting from the land side, there's a braided pattern of flowing channels that breaks out from the river’s mouth, where the largest pieces of sediment are dumped. At some point, this reaches a drop-off at the shoreline, depositing sediment on a submerged slope. Finally, the finest remaining sediment settles out to blanket the flat lake bottom. These are (sensibly) called the topset, foreset, and bottomset layers, respectively.
	</p>

	<p>
		 
	</p>

	<p>
		When you drill down through the sediment or look at a cross-section in an outcrop, you’ll see these <a href="https://hal.science/hal-04051994" rel="external nofollow">layers stacked</a> in order. Fine sediment of the bottomset layer forms the deepest deposits. Higher up, slanted foreset layers appear, built on top of pre-existing lake bottom sediments. Horizontal, coarser topset layers of sediment cap off the sequence. And that’s the pattern Perseverance saw on Mars.
	</p>

	<p>
		 
	</p>

	<p>
		<img alt="perseverance_mangold_f2-640x593.jpg" class="ipsImage" data-ratio="84.38" height="540" width="582" src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_mangold_f2-640x593.jpg">
	</p>

	<div>
		<em>Annotation highlighting the sedimentary delta layers.</em>
	</div>

	<div>
		<em>Mangold et al./Science</em>
	</div>

	<p>
		 
	</p>

	<p>
		“One of the things that we were looking for when we rolled up to the front of the delta fan here were the very finest sediments, preferably mudstone,” University of Florida Professor and participating scientist <a href="https://people.clas.ufl.edu/amywilliams1/" rel="external nofollow">Amy Williams</a> told Ars, “because that's made up of one of the finest grain sizes, which is clay, and clays are really, really good at preserving organic matter[…] And when we got up to the Jezero delta front, we basically jumped into effectively fine to medium sandstones, which is coarser than clay.”
	</p>

	<p>
		 
	</p>
</div>

<div itemprop="articleBody">
	<p>
		It could be that the finer bottomset sediments have also eroded away in this area. But it could also be that our Earth analogs are an imperfect match for the conditions on Mars.
	</p>

	<p>
		 
	</p>

	<p>
		“Something that I found really interesting to consider, though—when you picture deltas as we recognize them today on Earth, they're so influenced by the biology of Earth that you can't really deconvolve in some cases the [ways] that biology has made an impact on the geology,” Williams continued. “So for instance, there's been a discussion that some deltas that would have formed before land plants evolved wouldn't have necessarily had [as much] really fine clay because there were no land plants to facilitate the breakdown of rocks in that way. So maybe you don't see a ton of fine grains in the Jezero delta because we know there's no land plants.”
	</p>

	<p>
		 
	</p>

	<p>
		Sediments in these environments also don’t form simple, continuous layers like you see in the Grand Canyon. Streams wiggle around over time, with different kinds of sediment deposited inside the channel compared to just a few meters away from the channel. Additionally, the lake level could have fluctuated considerably, moving the shoreline back and forth. This means the sedimentary record they leave beyond is pretty complex, changing <a href="https://hal.science/hal-04051916" rel="external nofollow">over short distances</a>.
	</p>

	<p>
		 
	</p>

	<p>
		“What's really striking to me is that if you tried to ascend the delta at a bunch of different places, you would probably get different sequences that would finally give you the full story for the delta,” Williams said. “But that's not our mission to do that. And so we won't have the entire perfect history of this delta structure.”
	</p>

	<p>
		 
	</p>

	<p>
		The rover’s time up close with these rocks has certainly added to that story, though, as have the cache of <a href="https://mars.nasa.gov/mars-rock-samples/" rel="external nofollow">rock samples</a>. For example, there is a stack of delta deposits capped with a rubbly layer containing smoothed boulders over a meter in diameter. It takes <a href="https://hal.science/hal-04034932v1" rel="external nofollow">energetic floodwaters</a> to move rocks that large—a different picture from a lazy-stream-meets-lake delta kind of environment. As the rover climbs upward, it may eventually find out where those boulders came from.
	</p>

	<p>
		 
	</p>

	<div>
		<div>
			<div>
				<ul>
					<li data-responsive="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_stack_ZR0_0466_0708308744_769EBY_N0260756ZCAM08486_1100LMJ-980x714.png 1080, https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_stack_ZR0_0466_0708308744_769EBY_N0260756ZCAM08486_1100LMJ-1440x1049.png 2560" data-src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_stack_ZR0_0466_0708308744_769EBY_N0260756ZCAM08486_1100LMJ.png" data-sub-html="#caption-1963656" data-thumb="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_stack_ZR0_0466_0708308744_769EBY_N0260756ZCAM08486_1100LMJ-150x150.png">
						<figure>
							<div>
								<img alt="perseverance_stack_ZR0_0466_0708308744_7" class="ipsImage" data-ratio="75.10" height="524" width="720" src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_stack_ZR0_0466_0708308744_769EBY_N0260756ZCAM08486_1100LMJ-1440x1049.png">
							</div>

							<figcaption id="caption-1963656">
								<div>
									<em>Layered outcrop at the delta front.</em>
								</div>

								<div>
									<em><a href="https://mars.nasa.gov/mars2020/mission/status/412/celebrating-halloween-and-investigating-ghoulish-rocks-from-the-red-planet/" rel="external nofollow">NASA/JPL-Caltech/ASU</a></em>
								</div>
							</figcaption>
						</figure>
					</li>
					<li data-responsive="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_411_0703416225_285EBY_N0220000ZCAM08427_1100LMJ-980x714.png 1080, https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_411_0703416225_285EBY_N0220000ZCAM08427_1100LMJ-1440x1049.png 2560" data-src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_411_0703416225_285EBY_N0220000ZCAM08427_1100LMJ.png" data-sub-html="#caption-1963653" data-thumb="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_411_0703416225_285EBY_N0220000ZCAM08427_1100LMJ-150x150.png">
						<figure>
							<div>
								<img alt="perseverance_411_0703416225_285EBY_N0220" class="ipsImage" data-ratio="75.10" height="524" width="720" src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_411_0703416225_285EBY_N0220000ZCAM08427_1100LMJ-1440x1049.png">
							</div>

							<figcaption id="caption-1963653">
								<div>
									<em>Sedimentary layers at the delta front.</em>
								</div>

								<div>
									<em><a href="https://mars.nasa.gov/mars2020/mission/status/376/weve-arrived-perseverance-starts-the-delta-front-campaign/" rel="external nofollow">NASA/JPL-Caltech/ASU</a></em>
								</div>
							</figcaption>
						</figure>
					</li>
					<li data-responsive="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_PIA25325_-_enchanted_lake_FLF_0422_0704408885_738CWS_N0240000FHAZ02008_0A0085J03-stretched-980x552.jpg 1080, https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_PIA25325_-_enchanted_lake_FLF_0422_0704408885_738CWS_N0240000FHAZ02008_0A0085J03-stretched-1440x810.jpg 2560" data-src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_PIA25325_-_enchanted_lake_FLF_0422_0704408885_738CWS_N0240000FHAZ02008_0A0085J03-stretched.jpg" data-sub-html="#caption-1963655" data-thumb="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_PIA25325_-_enchanted_lake_FLF_0422_0704408885_738CWS_N0240000FHAZ02008_0A0085J03-stretched-150x150.jpg">
						<figure>
							<div>
								<img alt="perseverance_PIA25325_-_enchanted_lake_F" class="ipsImage" data-ratio="75.10" height="405" width="720" src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_PIA25325_-_enchanted_lake_FLF_0422_0704408885_738CWS_N0240000FHAZ02008_0A0085J03-stretched-1440x810.jpg">
							</div>

							<figcaption id="caption-1963655">
								<div>
									<em>Bedrock near the base of delta rock outcrop.</em>
								</div>

								<div>
									<em><a href="https://mars.nasa.gov/resources/26842/enchanted-view-of-jezero-rocks/" rel="external nofollow">NASA/JPL-Caltech</a></em>
								</div>
							</figcaption>
						</figure>
					</li>
					<li data-responsive="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_close_SIF_0558_0716486504_339EBY_N0280000SRLC04001_0000LMJ-980x714.png 1080, https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_close_SIF_0558_0716486504_339EBY_N0280000SRLC04001_0000LMJ-1440x1049.png 2560" data-src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_close_SIF_0558_0716486504_339EBY_N0280000SRLC04001_0000LMJ.png" data-sub-html="#caption-1963654" data-thumb="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_close_SIF_0558_0716486504_339EBY_N0280000SRLC04001_0000LMJ-150x150.png">
						<figure>
							<div>
								<img alt="perseverance_close_SIF_0558_0716486504_3" class="ipsImage" data-ratio="75.10" height="524" width="720" src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_close_SIF_0558_0716486504_339EBY_N0280000SRLC04001_0000LMJ-1440x1049.png">
							</div>

							<figcaption id="caption-1963654">
								<div>
									<em>Close-up look at delta rock layer.</em>
								</div>

								<div>
									<em><a href="https://mars.nasa.gov/mars2020/mission/status/408/a-broken-rock-wont-break-our-team/" rel="external nofollow">NASA/JPL-Caltech</a></em>
								</div>
							</figcaption>
						</figure>
					</li>
					<li data-responsive="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_vein_SIF_0612_0721282162_203EBY_N0301172SRLC01028_0000LMJ-980x733.png 1080, https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_vein_SIF_0612_0721282162_203EBY_N0301172SRLC01028_0000LMJ-1440x1076.png 2560" data-src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_vein_SIF_0612_0721282162_203EBY_N0301172SRLC01028_0000LMJ.png" data-sub-html="#caption-1963657" data-thumb="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_vein_SIF_0612_0721282162_203EBY_N0301172SRLC01028_0000LMJ-150x150.png">
						<figure>
							<div>
								<img alt="perseverance_vein_SIF_0612_0721282162_20" class="ipsImage" data-ratio="75.10" height="538" width="720" src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_vein_SIF_0612_0721282162_203EBY_N0301172SRLC01028_0000LMJ-1440x1076.png">
							</div>

							<figcaption id="caption-1963657">
								<div>
									<em>A white mineral forming veins in the surrounding rock.</em>
								</div>

								<div>
									<em><a href="https://mars.nasa.gov/mars2020/mission/status/421/whats-in-a-vein/" rel="external nofollow">NASA/JPL-Caltech</a></em>
								</div>
							</figcaption>
						</figure>
					</li>
				</ul>
			</div>
		</div>
	</div>

	<p>
		The highest <a href="https://dx.doi.org/10.1126/science.abl4051" rel="external nofollow">lake level implied</a> by these layers is also a fair bit lower than the height of the channel on the far side of the crater, which had been considered an outlet. That would make the crater into a closed system where water flows into a lake but can only leave by seeping into the ground or evaporating.
	</p>

	<p>
		 
	</p>

	<p>
		And there are <a href="https://hal.science/hal-04051994" rel="external nofollow">once again minerals present</a> that point to the presence of water even after these sediments were deposited. Some fractures in the rock are filled with veins of a relative of gypsum, for example. “There's clearly been water that has interacted with these rocks at a variety of periods in its history,” Williams said.
	</p>

	<p>
		 
	</p>

	<p>
		Dates from these rocks could tell us more about exactly when water was present in this area—and whether our current understanding of Mars’ climatic history needs to be revised.
	</p>
</div>

<div itemprop="articleBody">
	<h2>
		On top, and just getting started
	</h2>

	<p>
		Since February 2023, Perseverance has been cruising upslope, exploring the top of the delta and aiming to climb out of Jezero Crater entirely when that’s done. It takes time for the science team to analyze data and publish interpretations of what they’re seeing, so there isn’t as much to say here yet. But the images and mission updates do show us what the rover has been encountering.
	</p>

	<p>
		 
	</p>

	<p>
		There’s definitely more of the chunky stuff—pebbly sedimentary rock layers and rounded-off boulders scattered about the surface. Lobes of this sediment built by stream channels that wiggled back and forth over time point to that faster-flowing stream environment. “It looks like it's got a more complicated history than maybe we would have anticipated from orbit,” Williams said.
	</p>

	<p>
		 
	</p>

	<p>
		The rover spent time on several attempts at drilling a core of this pebbly rock, frustrated at first by its crumbliness. But the sample it eventually acquired could be an interesting one for several reasons. First, each pebble is a piece of some other rock, so it’s a sample with bonus samples inside. Additionally, a rock like this could <a href="https://mars.nasa.gov/mars2020/mission/status/468/persevering-across-the-upper-fan-in-search-of-record-keeping-rocks/" rel="external nofollow">provide clues</a> about whether Mars’ magnetic field was still active when it formed—whenever that was.
	</p>

	<p>
		 
	</p>

	<p>
		Perseverance’s route also took it past a notable landmark called Belva crater. This conspicuous divot must be the result of an impact event that occurred after these rocks were already here. That punches a nice hole that gives the rover a view of the layers beneath it. But it’s also <a href="https://mars.nasa.gov/mars2020/mission/status/461/up-and-soon-away-perseverance-continues-exploring-the-upper-fan/" rel="external nofollow">shallower than most</a> craters of this diameter, and a closer look may reveal why. Did something fill it in, or has the rim eroded down?
	</p>

	<p>
		 
	</p>

	<p>
		The upcoming itinerary will send Perseverance up to the rim of the crater—and hopefully beyond. The delta rocks will transition to whatever the surrounding bedrock is, which should be a particularly interesting area to explore. One simple question the rover will answer is whether the rock around the crater rim is the same stuff it saw on the crater floor. But it’s also apparent that there’s something different about the ring of rock just inside the crater walls.
	</p>

	<p>
		 
	</p>

	<p>
		“I’m really excited about the marginal campaign because we see a carbonate signature from orbit,” Williams explained. “And we've seen little bits of carbonate here and there in our mission so far. But again, it's that reconciling [of what we see] from orbit with [observations] on the ground. I'm really keen to see what we're going to encounter when we get up there.”
	</p>

	<p>
		 
	</p>

	<div>
		<div>
			<div>
				<ul>
					<li data-responsive="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_boulders_PIA25963-980x665.jpg 1080, https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_boulders_PIA25963-1440x978.jpg 2560" data-src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_boulders_PIA25963.jpg" data-sub-html="#caption-1963658" data-thumb="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_boulders_PIA25963-150x150.jpg">
						<figure>
							<div>
								<img alt="perseverance_boulders_PIA25963-1440x978." class="ipsImage" data-ratio="75.10" height="489" width="720" src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_boulders_PIA25963-1440x978.jpg">
							</div>

							<figcaption id="caption-1963658">
								<div>
									<em>Bounteous boulders abound!</em>
								</div>

								<div>
									<em><a href="https://mars.nasa.gov/resources/27574/perseverance-views-jezero-boulder-field/" rel="external nofollow">NASA/JPL-Caltech/ASU/MSSS</a></em>
								</div>
							</figcaption>
						</figure>
					</li>
					<li data-responsive="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_skrinkle_PIA25829-DeepZoom_updated-980x362.jpg 1080, https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_skrinkle_PIA25829-DeepZoom_updated-1440x532.jpg 2560" data-src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_skrinkle_PIA25829-DeepZoom_updated.jpg" data-sub-html="#caption-1963660" data-thumb="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_skrinkle_PIA25829-DeepZoom_updated-150x150.jpg">
						<figure>
							<div>
								<img alt="perseverance_skrinkle_PIA25829-DeepZoom_" class="ipsImage" data-ratio="73.89" height="266" width="720" src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_skrinkle_PIA25829-DeepZoom_updated-1440x532.jpg">
							</div>

							<figcaption id="caption-1963660">
								<div>
									<em>Composite photo of an area of layered rock known as "Skrinkle Haven."</em>
								</div>

								<div>
									<em><a href="https://mars.nasa.gov/resources/27457/curved-bands-of-rocks-at-skrinkle-haven/" rel="external nofollow">NASA/JPL-Caltech/ASU/MSSS</a></em>
								</div>
							</figcaption>
						</figure>
					</li>
					<li data-responsive="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_pebbly_SIF_0788_0736895186_121EBY_N0390926SRLC02504_0000LMJ-980x714.png 1080, https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_pebbly_SIF_0788_0736895186_121EBY_N0390926SRLC02504_0000LMJ-1440x1049.png 2560" data-src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_pebbly_SIF_0788_0736895186_121EBY_N0390926SRLC02504_0000LMJ.png" data-sub-html="#caption-1963659" data-thumb="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_pebbly_SIF_0788_0736895186_121EBY_N0390926SRLC02504_0000LMJ-150x150.png">
						<figure>
							<div>
								<img alt="perseverance_pebbly_SIF_0788_0736895186_" class="ipsImage" data-ratio="75.10" height="524" width="720" src="https://cdn.arstechnica.net/wp-content/uploads/2023/08/perseverance_pebbly_SIF_0788_0736895186_121EBY_N0390926SRLC02504_0000LMJ-1440x1049.png">
							</div>

							<figcaption id="caption-1963659">
								<div>
									<em>Pebbly conglomerate rock exposed in a drill hole.</em>
								</div>

								<div>
									<em><a href="https://mars.nasa.gov/mars2020/mission/status/465/whats-so-special-about-large-grains-on-mars/" rel="external nofollow">NASA/JPL-Caltech</a></em>
								</div>
							</figcaption>
						</figure>
					</li>
				</ul>
			</div>
		</div>
	</div>

	<p>
		The rest of the rover’s rock samples will be cached up on the crater rim, completing Perseverance’s primary mission. The <a href="https://mars.nasa.gov/msr/" rel="external nofollow">Mars Sample Return mission</a> that will hopefully retrieve these caches is years away, but the <a href="https://mars.nasa.gov/msr/multimedia/videos/?v=523" rel="external nofollow">plan for the mission</a> represents an almost unbelievable degree of difficulty.
	</p>

	<p>
		 
	</p>

	<p>
		There’s going to be a lander, some kind of errand-rover to scoop up all the samples and load them into the lander, a small rocket to lift them into orbit, and an orbiting spacecraft to catch that relay baton and fire it back to Earth.
	</p>

	<p>
		 
	</p>

	<p>
		“It's never been done before,” Williams noted. “And I think it's going to revolutionize what we know, not only about Mars, but I think it's gonna give us context for all the rocky inner planets. I think it's going to be one of the most incredible things that we can do for exploration and planetary science—to return these samples and be able to explore them with the suite of instruments that we just can't send to Mars.”
	</p>

	<p>
		 
	</p>

	<p>
		Until then, Perseverance is doing its part. Once it drops this next sample cache, it is expected to get an extended mission to do some more exploring. The rover is in great shape, so hopefully it will follow in the wheel tracks of its predecessors by carrying on well past the goal it was designed for—as part of the active Earthling presence on Mars.
	</p>
</div>

<p>
	 
</p>

<p>
	<a href="https://arstechnica.com/science/2023/09/the-perseverance-rover-is-reading-a-wet-history-of-mars/" rel="external nofollow">Source</a>
</p>
]]></description><guid isPermaLink="false">18720</guid><pubDate>Mon, 18 Sep 2023 20:42:34 +0000</pubDate></item><item><title>This Treaty Could Stop Plastic Pollution&#x2014;or Doom the Earth to Drown in It</title><link>https://nsaneforums.com/news/general-news/this-treaty-could-stop-plastic-pollution%E2%80%94or-doom-the-earth-to-drown-in-it-r18719/</link><description><![CDATA[<h3>
	The UN has released a draft of what might become a landmark agreement to protect human health and the environment. Emphasis on might.
</h3>

<p>
	Given the ceaseless procession of <a href="https://www.wired.com/story/this-brutal-summer-in-10-alarming-maps-and-graphs/" rel="external nofollow">disasters this summer</a>—from <a href="https://www.wired.com/story/the-heat-wave-scorching-the-us-is-a-self-perpetuating-monster/" rel="external nofollow">heat domes</a> to <a href="https://www.wired.com/story/the-rapid-intensification-of-hurricane-lee-is-a-warning/" rel="external nofollow">hurricanes</a> to the <a href="https://www.wired.com/story/cities-arent-supposed-to-burn-like-this-anymore-especially-lahaina/" rel="external nofollow">fiery destruction of Lahaina</a>—the slow-motion disaster of plastic pollution may not be top of mind. But the United Nations recently <a data-event-click='{"element":"ExternalLink","outgoingURL":"https://wedocs.unep.org/bitstream/handle/20.500.11822/43239/ZERODRAFT.pdf"}' data-offer-url="https://wedocs.unep.org/bitstream/handle/20.500.11822/43239/ZERODRAFT.pdf" href="https://wedocs.unep.org/bitstream/handle/20.500.11822/43239/ZERODRAFT.pdf" rel="external nofollow" target="_blank">released a “zero draft</a>,” or the principles under consideration, of what could become one of the most <a href="https://www.wired.com/story/the-planet-desperately-needs-that-un-plastics-treaty/" rel="external nofollow">consequential treaties ever written</a>: “the international legally binding instrument on plastic pollution, including in the marine environment.” 
</p>

<p>
	 
</p>

<p>
	It gets overshadowed by climate change, but plastic pollution has grown into a <a href="https://www.wired.com/story/the-world-is-drowning-in-plastic-heres-how-it-all-started/" rel="external nofollow">full-tilt emergency</a> that’s intimately linked with planetary warming. Humanity is now churning out a trillion pounds of these polymers a year, a carbon-intensive process because plastic is made of fossil fuels. Production is expected to <a data-event-click='{"element":"ExternalLink","outgoingURL":"https://www.oecd.org/environment/global-plastic-waste-set-to-almost-triple-by-2060.htm"}' data-offer-url="https://www.oecd.org/environment/global-plastic-waste-set-to-almost-triple-by-2060.htm" href="https://www.oecd.org/environment/global-plastic-waste-set-to-almost-triple-by-2060.htm" rel="external nofollow" target="_blank">triple by the year 2060</a>. “It is well established that our global plastic pollution crisis is also contributing to our global climate crisis, and the increasing shift towards investing into plastic production over the coming decades by the petrochemical industry is a great concern,” says Nick Mallos, the Ocean Conservancy’s vice president of conservation, who focuses on ocean plastics and has been involved in the negotiations.
</p>

<p>
	 
</p>

<p>
	The recycling rate in the United States is <a href="https://www.theguardian.com/us-news/2022/oct/23/us-plastic-waste-recycled-2021-greenpeace" rel="external nofollow">now 5 percent</a>—an abject failure, and an effort that the plastic industry <a href="https://www.npr.org/2020/09/11/897692090/how-big-oil-misled-the-public-into-believing-plastic-would-be-recycled" rel="external nofollow">always knew was going to be ineffective</a>. Instead, the vast majority of plastic is landfilled, incinerated, or escapes into the environment. Microplastics shed from everyday objects <a href="https://www.wired.com/story/whos-to-blame-for-plastic-microfiber-pollution/" rel="external nofollow">like clothing</a> and broken-down bottles and bags. Now, these tiny particles have <a href="https://www.wired.com/story/baby-poop-is-loaded-with-microplastics/" rel="external nofollow">corrupted our bodies</a> and every corner of the planet, from the <a href="https://www.wired.com/story/microplastics-are-polluting-the-ocean-at-a-shocking-rate/" rel="external nofollow">deepest oceans</a> to the <a href="https://www.wired.com/story/wind-microplastics/" rel="external nofollow">highest mountains</a>.
</p>

<p>
	 
</p>

<p>
	The draft treaty is a menu of interventions that are on the table during the UN’s negotiations, which are expected to extend through 2024 and involve experts and representatives from about 150 countries. So this document is far from a final product. It lists two possible objectives: either “to protect human health and the environment from plastic pollution” or “to end plastic pollution” in a bid to do the same. The second is more ambitious, while the first is less definitive.
</p>

<p>
	 
</p>

<p>
	Expect such distinctions to grow contentious. “The negotiations are quite polarized right now,” says David Azoulay, director of environmental health at the Center for International Environmental Law, which is participating in the talks. “There's a larger group of countries that actually are looking for ambition. There is a smaller number of countries that are hell-bent on preventing this treaty from delivering on the promises under the mandate that was given to end plastic pollution throughout its lifecycle.” Those promises mean tackling the material’s journey from manufacture to disposal, not just how it leaks into the environment after it’s trashed.
</p>

<p>
	 
</p>

<p>
	Negotiators are concerned that this treaty could go the way of <a href="https://www.wired.com/story/cop27-un-climate-talks-maddening-uncertainties/" rel="external nofollow">the Paris Agreement</a>, in which countries set a planet-wide goal of keeping temperatures from rising no more than 1.5 degrees Celsius above preindustrial levels, but were allowed to set their own targets for reducing emissions. Nations that haven’t met these targets may get publicly shamed, but not dragged in front of an international court. And if nations do implement strict limits, polluting industries can just move elsewhere.
</p>

<p>
	 
</p>

<p>
	Similarly, the plastics treaty could allow countries to set their own goals for reducing production. “Worst-case scenario, if consensus can't be reached, there's a risk that we get a watered-down, fully voluntary agreement that's left to member states to implement—or the negotiations can be extended for years,” says Mallos. He thinks the treaty should set specific targets that reduce production by volume or percentage. For example, the Ocean Conservancy is calling to halve the manufacture of single-use plastics by the year 2050, at a minimum.
</p>

<p>
	 
</p>

<p>
	It’s also important to keep in mind that plastic is a <a data-event-click='{"element":"ExternalLink","outgoingURL":"https://www.endocrine.org/news-and-advocacy/news-room/2020/plastics-pose-threat-to-human-health"}' data-offer-url="https://www.endocrine.org/news-and-advocacy/news-room/2020/plastics-pose-threat-to-human-health" href="https://www.endocrine.org/news-and-advocacy/news-room/2020/plastics-pose-threat-to-human-health" rel="external nofollow" target="_blank">toxic material</a> made of chemicals that themselves need regulation. The polymer PVC is <a data-event-click='{"element":"ExternalLink","outgoingURL":"https://www.greenpeace.org/usa/wp-content/uploads/legacy/Global/usa/report/2009/4/pvc-the-poison-plastic.html"}' data-offer-url="https://www.greenpeace.org/usa/wp-content/uploads/legacy/Global/usa/report/2009/4/pvc-the-poison-plastic.html" href="https://www.greenpeace.org/usa/wp-content/uploads/legacy/Global/usa/report/2009/4/pvc-the-poison-plastic.html" rel="external nofollow" target="_blank">especially nasty</a>, as are its component chemicals. (The train <a href="https://www.wired.com/story/the-ohio-derailment-lays-bare-the-hellish-plastic-crisis/" rel="external nofollow">that derailed in Ohio in February</a> was carrying vinyl chloride—which is turned into polyvinyl chloride—which is associated with lymphoma, leukemia, and other cancers, according to the <a href="https://www.cancer.gov/about-cancer/causes-prevention/risk/substances/vinyl-chloride" rel="external nofollow">US National Cancer Institute</a>.) “More than <a data-event-click='{"element":"ExternalLink","outgoingURL":"https://www.unep.org/resources/report/chemicals-plastics-technical-report"}' data-offer-url="https://www.unep.org/resources/report/chemicals-plastics-technical-report" href="https://www.unep.org/resources/report/chemicals-plastics-technical-report" rel="external nofollow" target="_blank">13,000 chemicals are associated with plastics</a>, around a quarter of which have been categorized as hazardous,” says Melanie Bergmann, a plastics researcher at the Alfred Wegener Institute, who’s attending the negotiations. “This diversity in the chemical composition of plastic products is one of several reasons that prevent safe circularity, and it needs to be addressed urgently.”
</p>

<p>
	 
</p>

<p>
	Bergmann and <a href="https://pubs.acs.org/doi/10.1021/acs.estlett.2c00763" rel="external nofollow">other scientists</a> have called for the treaty to address these component chemicals—for instance, by phasing out particularly toxic ones. The zero draft presents different techniques for eliminating individual chemicals or whole groups of them. “We are happy that the draft, in the various options, does acknowledge the importance of chemicals and the impacts of chemicals in managing plastics,” says Vito Buonsante, technical and policy adviser at the <a data-event-click='{"element":"ExternalLink","outgoingURL":"https://ipen.org/conferences/plastics-treaty-inc1"}' data-offer-url="https://ipen.org/conferences/plastics-treaty-inc1" href="https://ipen.org/conferences/plastics-treaty-inc1" rel="external nofollow" target="_blank">International Pollutants Elimination Network</a>, who is attending the negotiations. “That is a recognition of a bit more maturity in the understanding of what are plastics.” 
</p>

<p>
	 
</p>

<p>
	Microplastics, too, make a number of appearances in the draft. Scientists define these as bits smaller than 5 millimeters—about the width of a pencil eraser. The document acknowledges the problems they cause, and it has options for eliminating “intentionally added microplastics,” like microbeads in face washes. But “secondary microplastics,” the kind that break down from larger bottles and bags, remain a massively complicated problem to fix. They <a href="https://www.wired.com/story/microfibers-are-the-new-microbeads/" rel="external nofollow">flush into the environment</a> in all kinds of ways, from washing machine wastewater to highway runoff. (Particulates <a href="https://www.wired.com/story/your-car-is-spewing-microplastics/" rel="external nofollow">shear off car tires</a> and <a href="https://www.theguardian.com/environment/2020/dec/03/coho-salmon-pollution-car-tires-die-off" rel="external nofollow">wash into rivers and kill fish</a>.) 
</p>

<p>
	 
</p>

<p>
	“The zero draft didn't go far enough when it comes to secondary microplastics,” says Mallos. “We very much hope there'll be more specifics added about preventing these kinds of microplastics, since they do represent the vast majority of the microplastics we're finding in the ocean and the environment.”
</p>

<p>
	 
</p>

<p>
	The draft also lays out options for better managing reuse and refill schemes, while still promoting higher recycling rates. Expect that to be another sticking point as the negotiations unfold: Over the last few decades, the plastics industry has <a href="https://www.wired.com/story/yet-another-problem-with-recycling-it-spews-microplastics/" rel="external nofollow">pushed recycling</a> as an excuse to make exponentially more plastic, or hyped alternatives like <a href="https://www.wired.com/story/bio-based-plastics-aim-to-capture-carbon-but-at-what-cost/" rel="external nofollow">bio-based plastics made from plants</a>. (A representative from the Plastics Industry Association did not respond to WIRED’s requests for comment on the zero draft treaty.)
</p>

<p>
	 
</p>

<p>
	But if recycling actually worked as intended, they wouldn’t have to make so much more virgin material—we could keep the existing stuff in circulation. That’s why for pollution experts, the ultimate goal for these negotiations will be putting a cap on plastic creation. “This is a once-in-a-lifetime opportunity for us to right the ship and chart a course toward a future where we're not drowning in plastics,” says Mallos. “The health of our ocean and our human lives will be dependent on it.”
</p>

<p>
	 
</p>

<p>
	For now, Azoulay hails the zero draft as a step in the right direction. “The draft still includes options for having a completely voluntary and possibly useless instrument, but it also contains possibly strong measures around reducing production, around getting toxics out of the process,” he says. “I look back a few years ago, when we started discussing this issue at the international level, and this was unthinkable. This draft doesn't say much about what the final treaty will look like, but it does say a lot about how the global community has acknowledged what the problem is.”
</p>

<p>
	 
</p>

<p>
	<a href="https://www.wired.com/story/this-treaty-could-stop-plastic-pollution-or-doom-the-earth-to-drown-in-it/" rel="external nofollow">Source</a>
</p>
]]></description><guid isPermaLink="false">18719</guid><pubDate>Mon, 18 Sep 2023 20:35:31 +0000</pubDate></item><item><title>Scientists Invented a Super-Slippery Toilet That Nothing Sticks to</title><link>https://nsaneforums.com/news/general-news/scientists-invented-a-super-slippery-toilet-that-nothing-sticks-to-r18715/</link><description><![CDATA[<p>
	The traditional porcelain and ceramic toilet bowls could be on the way out, if a new 3D-printed design from scientists at the Huazhong University of Science and Technology in China catches on – with the key benefit being the ultra slippery surface.
</p>

<p>
	 
</p>

<p>
	Poop that clings to the toilet bowl is not only unpleasant for bathroom visitors and cleaners alike, it actually wastes a significant amount of water as more flushes are required to dislodge the stuff.
</p>

<p>
	 
</p>

<p>
	It was this problem that the scientists wanted to tackle by making a non-stick toilet bowl. They used a mixture of plastic and hydrophobic sand grains for their material, fused together with laser-based 3D printing techniques, in a design that was around a tenth the size of a standard toilet bowl.
</p>

<p>
	 
</p>

<p style="text-align:center;">
	<img alt="BowlDiagram.jpg" class="ipsImage" data-ratio="73.05" height="469" width="642" src="https://www.sciencealert.com/images/2023/09/BowlDiagram.jpg" />
</p>

<p style="text-align:center;">
	<span style="font-size:12px;"><em>The bowl uses hydrophobic grains and a lubricant. (Li et al., Advanced Engineering Materials, 2023)</em></span>
</p>

<p>
	 
</p>

<p>
	The abrasion-resistant super-slippery flush toilet, or ARSFT, was shown to repel synthetic feces, as well as multiple substances that the scientists tested. Nothing was able to get a grip on the surface, and everything slid straight down, much like the slippery pitcher plants that inspired the toilet design.
</p>

<p>
	 
</p>

<p>
	"The as-prepared ARSFT remains clean after contacting with various liquids such as milk, yogurt, highly sticky honey, and starch gel mixed congee, demonstrating excellent repellence to complex fluids," write the researchers in their published paper.
</p>

<p>
	 
</p>

<p>
	"Notably, even after being abraded to 1,000 cycles of abrasion using sandpaper, the ARSFT maintains its record-breaking super-slippery capability."
</p>

<p>
	That durability is important: non-stick toilet surfaces have been developed before, but they tend to wear down with repeated flushing, so something that retains its slipperiness is a much better option for replacing conventional materials.
</p>

<p>
	 
</p>

<p>
	The 3D printing approach enabled the scientists to introduce some porousness to the surface, and add a silicon oil as a lubricant. Both of these innovations helped in the non-stick qualities of the small bowl.
</p>

<p>
	 
</p>

<p>
	What's more, the lubricant can be replenished to keep the bowl ultra slippy over time. Less water would be required for flushing and for cleaning, the scientists suggest, which would quickly add up across millions of toilets.
</p>

<p>
	 
</p>

<div class="ipsEmbeddedVideo" contenteditable="false">
	<div>
		<iframe allowfullscreen="" frameborder="0" height="113" src="https://www.youtube-nocookie.com/embed/Cb_OrzNlpuI?feature=oembed" title="Nothing can stick to this 3D-printed slippery toilet" width="200"></iframe>
	</div>
</div>

<p>
	 
</p>

<p>
	The flushing toilet has only been around properly for a couple of centuries, but we now use more than 141 billion liters of fresh water globally each day to flush toilets, which is nearly six times the daily water consumption of Africa.
</p>

<p>
	 
</p>

<p>
	Today, much of the world struggles to access safe, clean water, a problem that's only going to be exacerbated by climate change. Innovations such as this one promise to make a real difference – but the concept now needs to be developed and scaled up.
</p>

<p>
	 
</p>

<p>
	"The concept of the 3D-printed object with a superior abrasion-resistant slippery ability will improve the development of super-slippery materials and further save water consumption in the human society," write the researchers.
</p>

<p>
	 
</p>

<p>
	The research has been published in <span style="color:#2980b9;"><em>Advanced Engineering Materials.</em></span>
</p>

<p>
	 
</p>

<p>
	<strong><a href="https://www.sciencealert.com/scientists-invented-a-super-slippery-toilet-that-nothing-sticks-to" rel="external nofollow">Source</a></strong><em></em>
</p>
]]></description><guid isPermaLink="false">18715</guid><pubDate>Sun, 17 Sep 2023 21:15:56 +0000</pubDate></item><item><title>WHO calls on China for 'full access' for COVID investigators: FT</title><link>https://nsaneforums.com/news/general-news/who-calls-on-china-for-full-access-for-covid-investigators-ft-r18713/</link><description><![CDATA[<p>
	The head of the World Health Organization told the Financial Times he was ready to send a new mission of experts to China to investigate the origins of COVID-19.
</p>

<p>
	 
</p>

<p>
	"We're pressing China to give full access, and we are asking countries to raise it during their bilateral meetings—(to urge Beijing) to co-operate," Tedros Adhanom Ghebreyesus told the FT.
</p>

<p>
	 
</p>

<p>
	He said the WHO had already written to China asking "to give us information " and for the organization to send a team "if they allow us to do so".
</p>

<p>
	The international community has been unable to determine with certainty the origins of the COVID pandemic.
</p>

<p>
	 
</p>

<p>
	The first cases were detected at the end of 2019 in Wuhan, China, suggesting two opposing theories: an escape from a laboratory in the city where such viruses were being studied or an intermediate animal that infected people at a local market.
</p>

<p>
	 
</p>

<p>
	A team of specialists led by the WHO and accompanied by Chinese colleagues had investigated China in early 2021.
</p>

<p>
	 
</p>

<p>
	In a joint report, they favored the hypothesis that the virus had been transmitted by intermediary animal from a bat to a human, possibly at a market.
</p>

<p>
	Tedros said after that all options remained "on the table".
</p>

<p>
	 
</p>

<p>
	There has not been a team able to return to China and WHO officials have repeatedly asked for additional data.
</p>

<p>
	 
</p>

<p>
	Tedros has repeatedly said the WHO would not abandon its investigation and has called on Beijing for transparency in sharing data, carrying out investigations and sharing the results.
</p>

<p>
	 
</p>

<p>
	The WHO lifted the highest alert level that had been in place for the pandemic earlier this year.
</p>

<p>
	 
</p>

<p>
	Thanks to vaccines, post-infection immunity and better treatment, the virus is now under greater control, although with the arrival of autumn in the Northern Hemisphere, new variants are emerging.
</p>

<p>
	 
</p>

<p>
	<span style="color:#7f8c8d;">© 2023 AFP</span>
</p>

<p>
	 
</p>

<p>
	<strong><a href="https://medicalxpress.com/news/2023-09-china-full-access-covid-ft.html" rel="external nofollow">Source</a></strong>
</p>
]]></description><guid isPermaLink="false">18713</guid><pubDate>Sun, 17 Sep 2023 19:26:01 +0000</pubDate></item><item><title>2 ways of knowing if there are PFAS in your drinking water</title><link>https://nsaneforums.com/news/general-news/2-ways-of-knowing-if-there-are-pfas-in-your-drinking-water-r18709/</link><description><![CDATA[<p>
	<span style="font-size:20px;"><strong>If forever chemicals made it into your water supply, a filtration system can help remove them.</strong></span>
</p>

<p>
	 
</p>

<p>
	Ever since the US started churning out per- and polyfluoroalkyl substances (PFAS) in the 1940s, these long-lived toxic chemicals have been accumulating everywhere humans have trodden.
</p>

<p>
	 
</p>

<p>
	Since then, these compounds have leached from industrial facilities and trash systems into our waterways, making our drinking supply one of the main ways forever chemicals are getting into our bodies. 
</p>

<p>
	 
</p>

<p>
	If you’re now eyeing your glass of water suspiciously, know that there are steps you can take to find out if there are PFAS in that H2O, and lower the risk of exposure for you and your family. 
</p>

<p>
	 
</p>

<p>
	<span style="font-size:22px;"><strong>Your water might have PFAS</strong></span>
</p>

<p>
	<br />
	Between 2016 and 2021, the US Geological Survey sampled the water from 716 different taps across the country and found that an estimated 45 percent of tested sites contained at least one kind of forever chemical. The study is the broadest of its kind in the US, making its main finding the best risk estimate we have for PFAS contamination in our drinking water. 
</p>

<p>
	 
</p>

<p>
	While efforts to regulate these chemicals are gaining traction, there is no federal mandate limiting the amount of PFAS in our drinking supply. In March, the Environmental Protection Agency proposed a nationwide enforceable limit of four parts per trillion for each of the six types of PFAS in our drinking water. But while the EPA weighs public comments on the bill, millions of people might still exposed to these persistent pollutants, as not all public water systems in the country are required to monitor and remove them.
</p>

<p>
	 
</p>

<p>
	Even if the EPA’s proposal succeeds, imposing legal PFAS limits doesn’t necessarily mean our water will be safe to drink. For example, the EPA’s maximum contaminant level goal for perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS), the most notorious cancer-causing PFAS, is zero. 
</p>

<p>
	 
</p>

<p>
	For these two compounds, “there’s no known safe level,” says Kelly Smalling, a USGS environmental chemist and lead author of the national tap water study. 
</p>

<p>
	 
</p>

<p>
	Researchers are still looking into how forever chemicals impact our health and how to efficiently dispose of them. This is particularly important because there are vast geographical areas in the US where PFAS levels are high enough to pose a health risk over time, but low enough to make it hard to remove them from the environment. 
</p>

<p>
	 
</p>

<p>
	By understanding the risk of PFAS exposure in your drinking water, you can find the best prevention strategy to mitigate it accordingly. 
</p>

<p>
	 
</p>

<p>
	<span style="font-size:22px;"><strong>Know thy water source </strong></span>
</p>

<p>
	 
</p>

<p style="text-align:center;">
	<img alt="usgs-pfas-contamination-map.jpg" class="ipsImage" data-ratio="75.10" height="518" width="720" src="https://www.popsci.com/uploads/2023/09/15/usgs-pfas-contamination-map.jpg" />
</p>

<p style="text-align:center;">
	<span style="font-size:12px;"><em>The USGS has a comprehensive and interactive map where you can search for PFAS contamination levels by zip code. Courtesy of USGS</em></span>
</p>

<p style="text-align:center;">
	 
</p>

<p>
	The easiest step in understanding your risk of PFAS exposure is knowing where you get your water from, says Jamie DeWitt, a pharmacologist at East Carolina University. If it comes from a public supply, you have it easier than those getting their H2O from private wells, as utility companies have to regularly test for contaminants and report the results to the public. 
</p>

<p>
	 
</p>

<p>
	The Environmental Working Group, an advocacy non-profit, has a nifty online tap water database that shows the servicing utility and contaminants detected where you live—just search using your zip code. You can also use this platform to gather information before you talk to your public water provider, which the EPA encourages you to do. If you find high PFAS levels in your water supply, DeWitt recommends you reach out and find out what your utility company is doing to reduce them.
</p>

<p>
	 
</p>

<p>
	There’s a caveat, though—the data included in the EWG’s database are of contaminants tested by and at the utility plant, which are a few steps removed from the actual amount that you might imbibe at home. A 2022 study published in the journal Environmental Science and Pollution Research, shows that PFAS can leak into the water through the distribution infrastructure, so real PFAS levels might actually be higher than those reported by the EWG. For a more downstream estimate of PFAS contamination, the authors of the USGS study have fashioned an interactive map including data from private wells. 
</p>

<p>
	 
</p>

<p>
	If you live in or near an area where PFAS were detected, there’s a good chance these chemicals are in your tap water, as their footprint tends to spill far and wide. As a proxy for estimating contamination levels in areas where researchers didn’t test directly, the map also includes industry facilities that might be sources for PFAS. 
</p>

<p>
	 
</p>

<p>
	Although the EWG’s tap water database pertains to public utilities only, it could still help the 40 million Americans whose water comes from private wells. Smalling explains this is because neighboring water supplies, whether public or private, usually originate from a common reservoir in the same catchment area. This makes it highly likely that PFAS detected in one source might be present in others nearby. 
</p>

<p>
	 
</p>

<p>
	<span style="font-size:22px;"><strong>At-home PFAS tests</strong></span>
</p>

<p>
	<br />
	There are several PFAS testing kits for household water in the market, where you mail a sample and get results after a week or so. 
</p>

<p>
	 
</p>

<p>
	If you’re thinking about testing your water for PFAS, pick a test kit that follows the EPA’s Method 537.1 and Method 533. The easiest way to know which ones comply with these standards is to follow your state’s recommendations or refer to the EPA’s list of approved manufacturers. 
</p>

<p>
	 
</p>

<p>
	Choosing which test to go with is a delicate balancing act between cost, exposure risk, convenience, and the scope of the test. Lydia Jahl, a science and policy manager at the environmental advocacy nonprofit Green Science Policy Institute, recommends you look for the number of PFAS species a kit can detect (the more the better), and its detection threshold: the lower it is, the more sensitive.
</p>

<p>
	 
</p>

<p>
	Money can also be an important deciding factor, as these services can cost up to a few hundred dollars. However, the investment might be warranted if you own a well or live near a high-risk zone. For those on a budget, a good alternative is Cyclopure’s PFAS test, which is only $79. While the test meets a slightly older standard and is not government-certified, it does a good job at detecting a whopping 55 types of PFAS and their precursors. 
</p>

<p>
	 
</p>

<p>
	Test kits come with their own instructions, but you’ll find there are general guidelines that apply to most cases:
</p>

<p>
	 
</p>

<ul>
	<li>
		Start by thoroughly washing your hands before collection, and make sure you wear a fresh pair of surgical gloves to avoid contaminating the water sample.
	</li>
</ul>

<p>
	 
</p>

<ul>
	<li>
		Avoid touching the inside of the collection bottle and its lid. If you must set the lid down, keep the inside facing up.
	</li>
</ul>

<p>
	 
</p>

<ul>
	<li>
		For the most accurate measurement, run your faucet on low for at least three minutes to flush the pipes before filling the collection bottle. Do not overfill the container.
	</li>
</ul>

<p>
	 
</p>

<ul>
	<li>
		If the sampling bottle contains a preservative, thoroughly mix in the water by carefully inverting the closed container a few times.
	</li>
</ul>

<p>
	 
</p>

<ul>
	<li>
		Make sure to have a watch or clock handy, as you’ll need to indicate the location and exact time you collected the sample. If applicable and per the test’s instructions, you can also specify which tap you collected the water from.
	</li>
</ul>

<p>
	 
</p>

<ul>
	<li>
		Have some ice ready, as most samples have to be at 43 degrees Fahrenheit when they arrive at the lab. Some tests come with their own ice packs, but depending on the instructions, you may have to make your own with a zip-top bag and some ice cubes.
	</li>
</ul>

<p>
	 
</p>

<ul>
	<li>
		Make sure to overnight your specimen or drop it off at a designated site within 24 hours of collection.
	</li>
</ul>

<p>
	 
</p>

<p>
	Currently, there is no consensus on how often drinking water supplies should be tested for PFAS. For example, the state of New Hampshire recommends testing private wells every three to five years, while Massachusetts only once a decade after an initial negative PFAS result. 
</p>

<p>
	 
</p>

<p>
	<span style="font-size:22px;"><strong>You’ve tested your water for PFAS. Now what? </strong></span>
</p>

<p>
	<br />
	If you are particularly concerned about your risk of exposure, you can take a blood test to learn about your body’s PFAS levels. You can find such tests from manufacturers like EmpowerDX, but they don’t come cheap and they’re likely not covered by insurance, DeWitt says. 
</p>

<p>
	 
</p>

<p>
	Whether your water management company is acting against PFAS or not, an easy way to reduce your exposure to these chemicals is to filter your water supply. You can install filters that clean the water for your entire household at once (point-of-entry filtration), or just that from the specific tap you drink from (point-of-use system). 
</p>

<p>
	 
</p>

<p>
	The market is filled with a wide range of options at varying prices, so choosing a solution for you can be confusing. The EWG has a list with several point-of-use filters, which takes into consideration their ability to remove PFAS, and their associated costs. There are also offerings such as Cyclopure’s $45 filter cartridges, which have been certified by the National Sanitation Foundation. 
</p>

<p>
	 
</p>

<p>
	But any filter is better than nothing, says Jahl, and even traditional, lower-end countertop filters can remove some PFAS from drinking water. She personally opts for the ubiquitous Brita pitcher filter, which relies on activated carbon to filter a broad spectrum of contaminants, including PFAS. To keep the filtration performance in top condition, just remember to switch out your filters as instructed. 
</p>

<p>
	 
</p>

<p>
	<strong><a href="https://www.popsci.com/diy/pfas-in-drinking-water-how-to-know/" rel="external nofollow">Source</a></strong>
</p>
]]></description><guid isPermaLink="false">18709</guid><pubDate>Sun, 17 Sep 2023 17:47:30 +0000</pubDate></item><item><title>Inside the buzzing business of sleep</title><link>https://nsaneforums.com/news/general-news/inside-the-buzzing-business-of-sleep-r18708/</link><description><![CDATA[<p>
	<span style="font-size:22px;"><em>Sleeplessness has created a new market for sleep products like hormone supplements, tracking and breathing devices, memory foam mattress and subscriber-only bed time stories.</em></span>
</p>

<p>
	 
</p>

<p>
	New Delhi: It’s a Japanese folklore called The Moon Princess. A poor couple discovers a baby girl inside a bamboo stalk and takes her in as a divine blessing. They name her Kaguya-hime and raise the child as their own. Kaguya-hime grows up in the idyllic countryside, the word of her beauty travelling far and wide. But she spurns every suitor, including the emperor of Japan, and returns to where she came from—the moon.
</p>

<p>
	 
</p>

<p>
	The story, more than 1,200 years old, is listed on an app called Neend, literally meaning sleep. Following her own struggles with sleep post-covid, 32-year-old Surbhi Jain, an IIT Bombay graduate, started Neend in mid-2021. Its USP is bedtime stories told in a languid tone, peppered with simple instructions on how to prepare oneself for sleep: not just turning off the lights but how to breathe, relax each part of the body and let go of the day gone by.
</p>

<p>
	 
</p>

<p>
	Neend takes a leaf out of internationally hit podcasts such as ‘Sleep with me’ by Drew Ackerman who tells boring stories with a generous dose of humour, lulling his listeners to sleep.
</p>

<p>
	 
</p>

<p>
	“Our narrators have a calm and familiar tone which helps listeners relax. The voices are carefully curated, based on research on what frequencies are soothing to the ears," Jain said. The plots are unhurried, to ensure one does not get all excited.
</p>

<p>
	 
</p>

<p>
	Alongside app-based podcasts, which Jain claims has 30,000 daily listeners, Neend has also ventured into sleep solution products like melatonin gummies—a hormone which induces sleep in response to darkness—and herb-based relaxants. It also offers therapy and counselling services by connecting users to sleep experts. An annual subscription to the app costs ₹699.
</p>

<p>
	 
</p>

<p>
	“We think of ourselves not as a content or an e-commerce venture but a sleep and relaxation company," Jain said.
</p>

<p>
	 
</p>

<p>
	Neend, in a way, stands apart as a unique venture in an emerging market promising to deliver a restful night of sleep to customers. This market comprises new age mattress companies, makers of breathing devices and nutraceuticals, wearable sleep trackers such as smart watches and wrist bands, and medical practitioners urging their patients to get a sleep study done—to diagnose serious underlying conditions like sleep apnea.
</p>

<p>
	 
</p>

<p>
	<span style="font-size:22px;"><strong>Biological rhythms</strong></span>
</p>

<p>
	<br />
	But should one obsess over sleep? For Sagar Bishnoi, the answer is an unequivocal yes. Now 29, Bishnoi, a Delhi-based environment professional, struggled for years to get a good night’s sleep. The earliest memory, which he said is printed in his brain, dates to a morning when he was just 12. Unable to wake up on time, Bishnoi had reached school late. He was publicly admonished for frequently coming late for the school assembly. He felt humiliated.
</p>

<p>
	 
</p>

<p>
	Later, even as he graduated from college and took up a job, the distress over sleep never left him. “I would go to bed on time but not fall asleep. The deepest sleep came only towards morning. I would miss alarms and phone calls. I used to wake up tired and feel sleepy mid-day while at work," Bishnoi recalled.
</p>

<p>
	 
</p>

<p>
	The trauma of sleep deprivation led Bishnoi to box himself as a night owl. But thankfully, after a year of concerted effort, Bishnoi managed to fix his problem last year. The break came after he realized the importance of circadian rhythm—bodily functions which control temperatures, hormone secretion and the cycles of sleep and wakefulness.
</p>

<p>
	 
</p>

<p>
	These bodily rhythms are often impacted by external factors like exposure to light, ambient temperature and eating or drinking habits. Exposure to light blocks release of melatonin, a sleep-inducing hormone produced by the brain in response to darkness. Conversely, anxiety leads to elevated levels of cortisol, a stress hormone, which interferes with normal sleep. While cortisol levels rise and fall with the sun, melatonin levels move in the opposite direction, maintaining the body’s circadian rhythm.
</p>

<p>
	 
</p>

<p>
	Why is sleep important? During sleep, memories are consolidated—transferred from short term to long term storage sites—and the metabolic waste generated in the brain due to nerves firing through the day is cleared, explained Swami Subramaniam, neuroscientist, and author of the book
</p>

<p>
	Mastering Sleep.
</p>

<p>
	 
</p>

<p>
	Sleeping less can severely impair daily activities as well as affect long-term health. For instance, a 2018 study of 10,000 individuals, published in the journal Sleep, found evidence of cognitive impairment among adults sleeping less than the recommended 7-8 hours in a day. The sleep deprived found it difficult to learn new things, concentrate, make decisions, or react to a situation.
</p>

<p>
	 
</p>

<p>
	The long-term health impact is more damaging. A growing body of evidence links sleep loss to chronic conditions like obesity, hypertension, type-2 diabetes, anxiety, dementia, depression, and Alzheimer’s disease.
</p>

<p>
	 
</p>

<p>
	Data on sleep deprivation in India is sparse and mostly comes from non-official sources. According to a LocalCircles survey released in March this year, more than half (55%) of respondents said they got less than six hours of ‘uninterrupted’ sleep in a day. A little over fifth said they were not even sleeping for four hours.
</p>

<p>
	 
</p>

<p>
	Interruptions lead to poor quality sleep by disrupting different stages of a sleep cycle. The cycles usually move from three non-rapid eye movement (non-REM) stages of light to deep sleep, to rapid eye movement (REM) sleep—when dreams happen. These cycles keep repeating through the night, allowing the brain and the body to recuperate.
</p>

<p>
	 
</p>

<p>
	Another survey, by Wakefit—a mattress and sleep solutions startup—released in 2023, showed a high incidence of self-reported insomnia: one in three respondents. Almost 90% of the respondents said they woke up once or twice during the night, with 60% saying they got up in the morning not feeling well-rested. Nearly 45% of respondents said social media browsing kept them awake at night. Worries about the future, finances and work were the second most important reason which kept people awake.
</p>

<p>
	 
</p>

<p>
	<span style="font-size:22px;"><strong>Melatonin to mattress</strong></span>
</p>

<p>
	<br />
	Due to the changing nature of work and bizarre sleep routines, insomnia is now a common complaint, said Akanksha Jha, pulmonologist and sleep disorder specialist at Kailash Hospital, Greater Noida.
</p>

<p>
	 
</p>

<p>
	According to Jha, many who struggle to sleep regularly pop melatonin supplements or sleeping pills. Melatonin products are now readily available on e-commerce websites or as over-the-counter drugs.
</p>

<p>
	 
</p>

<p>
	As per Future Markets Insights, the melatonin market in India is expected to cross $10 million by 2033. The small size of the market has not deterred established and relatively unknown brands to test the waters. A check on e-retail outlets throws up numerous options for melatonin sold as tablets, syrups and gummies, often punched with vitamins and natural ingredients like chamomile, lavender and other herbs. Earlier this year, Procter and Gamble launched a melatonin sleep gummy named Vicks ZzzQuil Natura, a product which it claims is non-addictive with no next day drowsiness.
</p>

<p>
	 
</p>

<p>
	The makeover of India’s organized sector mattress market—estimated at $240 million in 2023 by Statista—is no less interesting. Most mattress manufacturers, including established ones like Sheela Foam and Kurlon are now pitching themselves as sleep solutions companies, promising that their products will help customers ‘sleep like a pro.’ The startup ecosystem is also flush with mattress makers which include the likes of Wakefit and The Sleep Company.
</p>

<p>
	 
</p>

<p>
	“While working on the design, we realized that consumers were paying a steep price for mattresses which hamper blood flow and leave a mark on the skin," said Chaitanya Ramalingegowda, co-founder of Wakefit which began operations in 2016. The startup has seen its annual revenues surge 22% year-on-year to ₹825 crore in 2022-23.
</p>

<p>
	 
</p>

<p>
	“Our mattresses are designed to ensure that the spine is aligned correctly and one wakes up without pain. The products are tested for breathability, firmness, and humidity (control)," Ramalingegowda added.
</p>

<p>
	 
</p>

<p>
	The Bengaluru-based startup, which claims to have served two million customers, has a unique policy for its employees. They are entitled to a 30-minute nap every afternoon to ‘recentre and recharge’ themselves on recliners placed in an air-cooled and dark nap room.
</p>

<p>
	 
</p>

<p>
	In addition to medical supplements and mattresses, a growing number of consumers are now using sleep monitoring devices which include wearables like smartwatches and wrist bands. Data from Statista shows that shipments of smartwatches to India jumped to 31 million units in 2022, from just 12 million units the year before.
</p>

<p>
	 
</p>

<p>
	Popular smartwatch brands like Apple and Fitbit help consumers track duration and time spent in different sleep stages—like REM and deep sleep—as well as snoring patterns, which can alert users to serious medical conditions like obstructive sleep apnea (OSA).
</p>

<p>
	 
</p>

<p>
	In OSA, breathing can stop and resume repeatedly. In obese patients, fat deposits around the upper airway obstruct breathing. This not only makes it hard to reach the deep and restful stages of sleep—leading to daytime fatigue—but also increases the risks of a stroke or a heart attack due to a sudden drop in blood oxygen levels.
</p>

<p>
	 
</p>

<p>
	<span style="font-size:22px;"><strong>Costly sleep study</strong></span>
</p>

<p>
	<br />
	To check for sleep apnea, patients need to undergo a sleep study where sensors track the activity of multiple body systems, including heart, brain and the respiratory system, over the course of a night.
</p>

<p>
	 
</p>

<p>
	According to sleep specialists, sleep apnea is common but many patients hesitate to get a sleep study done since it is expensive, costing between ₹30,000 and ₹40,000. Some are also averse to using a continuous positive airway pressure (Cpap) machine which delivers continuous pressurized air into a mask that one must wear while sleeping.
</p>

<p>
	 
</p>

<p>
	The sleep apnea devices market in India was estimated at $121 million in 2021, as per an estimate by TechSci Research, and the segment is forecast to cross $200 million by 2027. The growth, the report said, will be driven by factors like an ageing population, increasing pollution levels leading to higher incidence of respiratory disorders, and rise in lifestyle diseases like hypertension and obesity.
</p>

<p>
	 
</p>

<p>
	The boom in medical services catering to sleep disorders is already visible. Today, most major cities in India have multiple sleep clinics where patients can get a sleep study done and take medical advice.
</p>

<p>
	 
</p>

<p>
	“Four out of 10 patients who come to us suffer from sleep apnea. The remaining cases consist of insomnia and circadian rhythm disturbances," said N. Ramakrishnan, founder of the Nithra Institute of Sleep Sciences, Chennai, which was set up in 2004.
</p>

<p>
	 
</p>

<p>
	Ramakrishnan, who is also director of critical care services at Apollo Hospitals, said that the number of patients visiting the sleep clinic has multiplied manifold in recent years, with rising awareness and growing sleeplessness.
</p>

<p>
	 
</p>

<p>
	He often gets patients who appear like overworked zombies, yet complain of declining productivity at work. Many admit to popping anti-anxiety medicines and cough syrups—without visiting a doctor—just to get a few hours of sleep.
</p>

<p>
	 
</p>

<p>
	“It is ironic that medical insurance does not cover sleep treatment and breathing devices (like Cpap) since the treatment does not require hospitalization. Only when sleep deprivation leads to bigger troubles like a heart attack or stroke, insurers step in," Ramakrishnan added.
</p>

<p>
	 
</p>

<p>
	<span style="font-size:22px;"><strong>Darkness is bliss</strong></span>
</p>

<p>
	<br />
	The cost of sleep deprivation goes beyond personal health. A 2017 study published in the RAND Health Quarterly warned about the high economic costs of insufficient sleep, estimated at $680 billion a year in five OECD countries—including, $400 billion for the US and $60 billion for Germany. Lost sleep impairs productivity and performance at work, coupled with higher absenteeism. OECD is short for Organisation for Economic Co-operation and Development.
</p>

<p>
	 
</p>

<p>
	According to Charles A. Czeisler, professor of sleep medicine at Harvard Medical School, the often-glorified corporate executive who logs 100-hour workweeks or lives out of a suitcase in multiple time zones is endangering themselves, putting their companies at risk.
</p>

<p>
	 
</p>

<p>
	The more we light up our lives, the less we seem to sleep, Czeisler wrote in a Nature piece published in 2013. “Sleep is essential to our physical and mental well-being, so it is vital that we learn more about the impact of light consumption and other ways our 24/7 society affects sleep, circadian rhythms and health," he added.
</p>

<p>
	 
</p>

<p>
	Lest one is drowned by the wave of sleep hacks on the internet, the US Centres for Disease Control and Prevention offers some useful tips for a good night’s sleep. Be consistent and follow a routine. Make sure, the bedroom is quiet, cool, dark. Stay away from all electronic devices including mobiles, laptops and television. Avoid large meals and caffeine before bedtime. And go, get some exercise during the day.
</p>

<p>
	 
</p>

<p>
	Sagar Bishnoi has been doing exactly that to fix his sleep. But when friends and family come visiting his bachelor’s pad in Delhi, they are often left wide-eyed. Dim lights or a candle placed at floor-level late evening, gentle wafts of cool breeze, a mild sandalwood fragrance hanging in the air.
</p>

<p>
	“Kya mahol banake rakhha hai (what mood have you created, man)," they would say.
</p>

<p>
	 
</p>

<p>
	Bishnoi takes the jest lightly. He is not worried about his preoccupation with sleep taking a toll on his social life. “But once in a while I do break the rules when it’s worth it."
</p>

<p>
	 
</p>

<p>
	<strong><a href="https://www.livemint.com/science/health/inside-the-buzzing-business-of-sleep-11694969238854.html" rel="external nofollow">Source</a></strong>
</p>
]]></description><guid isPermaLink="false">18708</guid><pubDate>Sun, 17 Sep 2023 17:40:25 +0000</pubDate></item><item><title>Two cups of espresso could help ward of Alzheimer's - study</title><link>https://nsaneforums.com/news/general-news/two-cups-of-espresso-could-help-ward-of-alzheimers-study-r18703/</link><description><![CDATA[<p>
	<span style="font-size:20px;">Italian scientists: Coffee could avert accumulation of tau proteins and guard against Alzheimer's disease.</span>
</p>

<p>
	 
</p>

<p>
	Caffeine is a daily ritual for many, serving as the spark that ignites their day. 
</p>

<p>
	 
</p>

<p>
	For coffee lovers, sipping on a cup of espresso isn't just about kickstarting the morning; it's about nurturing a beautiful habit. 
</p>

<p>
	 
</p>

<p>
	<span style="font-size:22px;">Study: Espresso delivers far more than a caffeine buzz</span>
</p>

<p>
	 
</p>

<p>
	A groundbreaking study conducted by researchers at the University of Verona in Italy, published in the Journal of Agricultural and Food Chemistry, reveals that espresso delivers far more than a caffeine buzz.
</p>

<p>
	 
</p>

<p>
	The Italian scientists found that an espresso extract can inhibit the accumulation of tau protein in the brain, a protein closely linked to Alzheimer's disease.
</p>

<p>
	 
</p>

<p>
	Tau proteins play a crucial role in maintaining the structural integrity of the brain in healthy individuals. However, the build-up of these proteins is considered a hallmark of various neurodegenerative disorders, including Alzheimer's disease. 
</p>

<p>
	 
</p>

<p>
	To shed light on how regular espresso consumption impacts the development and behavior of these problematic protein aggregates, the researchers embarked on this groundbreaking study.
</p>

<p>
	 
</p>

<p>
	As tau protein fibers accumulate in the brain, individuals start experiencing symptoms such as memory loss, impaired judgment, wandering, and mood swings. Alzheimer's disease is one of today's most challenging health crises, mainly due to the aging global population. Some studies even suggest that it has become the third leading cause of death. Consequently, researchers are increasingly focused on preventing the build-up of tau proteins as a critical strategy to reduce the risk of Alzheimer's.
</p>

<p>
	 
</p>

<p>
	Espresso, a globally beloved beverage, is the foundation for various coffee variations.
</p>

<p>
	 
</p>

<p>
	<span style="font-size:22px;">Italian study: The details</span>
</p>

<p>
	<br />
	In their latest research, the scientists meticulously analyzed the molecular composition of espresso coffee extract, pinpointing its primary components. Their selection included caffeine, trigonelline, alkaloids, and flavonoids genistein and theobromine. These components were incubated alongside a truncated form of the tau protein for up to 40 hours.
</p>

<p>
	 
</p>

<p>
	The findings are groundbreaking, revealing that all coffee extract, caffeine, and genistein possess biological properties that prevent aggregation and thickening and even inhibit the return of the tau protein, the study said.
</p>

<p>
	 
</p>

<p>
	Espresso compounds hindered the accumulation of tau protein and exhibited the capacity to bind to pre-existing tau fibrils. As the concentration of espresso extract and caffeine or genistein compounds increased, the tau fibers grew shorter. The most significant impact was observed when utilizing a complete espresso extract.
</p>

<p>
	 
</p>

<p>
	According to the study authors, consuming two or three cups of espresso each day provides substantial amounts of caffeine and genistein, capable of penetrating the blood-brain barrier and exerting their neuroprotective effects. 
</p>

<p>
	 
</p>

<p>
	Given that the typical concentration of tau proteins in the brain is about 25 times lower than the levels tested in this study, there is a compelling hypothesis that coffee consumption might play a pivotal role in averting the accumulation of these proteins and guarding against Alzheimer's disease.
</p>

<p>
	 
</p>

<p>
	<span style="font-size:22px;">Previous studies</span>
</p>

<p>
	<br />
	It's worth noting that this isn't the first study to link coffee consumption to Alzheimer's. In 2018, researchers discovered that regular coffee consumption may reduce the risk of developing Alzheimer's or Parkinson's later in life. 
</p>

<p>
	 
</p>

<p>
	Scientists at the Krembil Brain Institute in Canada examined various coffee blends, including lightly roasted (light), deep (dark), and dark decaffeinated coffee.
</p>

<p>
	 
</p>

<p>
	Their investigation unveiled a group of compounds known as phenylindanes, which form during the coffee bean roasting process. These phenylindanes contribute to the characteristic bitterness of coffee and thwart the interaction between amyloid-beta and tau proteins – two proteins whose deposits are commonly found in the brains of Alzheimer's and Parkinson's patients.
</p>

<p>
	 
</p>

<p>
	<a href="https://www.jpost.com/omg/article-759234" rel="external nofollow">Source</a>
</p>
]]></description><guid isPermaLink="false">18703</guid><pubDate>Sun, 17 Sep 2023 00:57:34 +0000</pubDate></item><item><title>The Growing Threat Doctors and Patients Are Creating</title><link>https://nsaneforums.com/news/general-news/the-growing-threat-doctors-and-patients-are-creating-r18702/</link><description><![CDATA[<p>
	<span style="font-size:20px;">Since we’ve yet to legislate or innovate our way out of this "urgent threat," patients must speak up.</span>
</p>

<p>
	 
</p>

<p>
	The statistics on antibiotic use are jarring. Five prescriptions written each year for every six people in the United States. One-third of those antibiotics not needed at all.
</p>

<p>
	 
</p>

<p>
	Overuse of antibiotics has been a top concern for decades, and public health officials say the growth of antibiotic-resistant bacteria is picking up speed. More than 2.8 million antibiotic-resistant infections occur in the United States annually, according to the U.S. Centers for Disease Control and Prevention. Of those, about 35,000 people die.
</p>

<p>
	<br />
	Others, like Christina Fuhrman, have their lives upended. She had six hospital stays in seven months at 31, fighting for her life after a Clostridoiodes difficile (C. diff) infection left her with intense fatigue, pain, and diarrhea. The Pew Charitable Trust shared her story as an example of what can happen when a healthcare provider inappropriately prescribes antibiotics.
</p>

<p>
	 
</p>

<p>
	C. diff is the overgrowth of this bacteria that most of us have in our gastrointestinal (GI) tracts but can get thrown out of balance after taking antibiotics. The infection is particularly deadly to seniors and those with compromised immune systems.
</p>

<p>
	 
</p>

<p>
	In Fuhrman’s case, a dentist prescribed a “precautionary” round of antibiotics after her root canal. It’s an example of the 47 million unnecessary prescriptions handed out each year, according to Pew Charitable Trusts. Of those who do have an infection that could be helped by antibiotics, only half are given the correct protocol.
</p>

<p>
	<br />
	Exacerbating the overprescription dilemma, Pew said there was a 15 percent increase in infections and deaths related to drug-resistant bacteria in the first year of the COVID-19 pandemic, likely due to an uptick in unjustified antibiotic use.
</p>

<p>
	<br />
	<span style="color:#c0392b;"><span style="font-size:22px;"><strong>Antibiotics Aren’t Risk-Free</strong></span></span>
</p>

<p>
	<br />
	Rachel Zetts, senior officer for Pew’s antibiotic resistance project, told The Epoch Times the nonprofit is shifting its antibiotic stewardship efforts to outpatient and community settings and encouraging patients to use their voice to protect their own health. Pew has been working to lower antibiotic overprescribing in hospitals since 2015.
</p>

<p>
	<br />
	“A lot of times there is a perception antibiotics are safe, and they are largely a safe and efficacious drug. There’s always a risk anytime a medication is prescribed,” Ms. Zetts said. “It’s really critical from our perspective that these antibiotics are used appropriately and when needed, both from a resistant perspective and a patient quality care perspective.”
</p>

<p>
	 
</p>

<p>
	One fairly recent finding is that adverse effects appear to be worse for those who didn’t need the antibiotic in the first place, highlighted in a study published in 2020 in JAMA Network Open. Examining 2.8 million children prescribed antibiotics, the study found that children who received a non-recommended antibiotic for bacterial infections were at three to eight times higher risk for developing C. diff infections. They also had an elevated risk of other GI-related side effects and serious allergic reactions.
</p>

<p>
	<br />
	<span style="font-size:22px;"><strong>The Evolution of Bacteria</strong></span>
</p>

<p>
	<br />
	Antibiotics only treat infections caused by bacteria, and many unnecessary prescriptions are written for similar symptoms that have different root causes. Antibiotics don’t cure viral infections—like the common cold, influenza, COVID-19, coughs, stomach bugs, and even some ear and sinus infections.
</p>

<p>
	<br />
	In spite of that, one study of 1,705 patients with COVID-19 found 56 percent were given antibiotics, even though only 3.5 percent had a confirmed bacterial infection. Hospital antibiotic use for the virus early in the pandemic varied from 27 percent to 84 percent. Results were published in 2021 Clinical Infectious Diseases.
</p>

<p>
	<br />
	“It’s tough because when you’re suffering, you want something to ease that suffering,” Romney Humphries, division director of the laboratory at Vanderbilt University Medical Center, told The Epoch Times.
</p>

<p>
	 
</p>

<p>
	“Sometimes antibiotics make you feel a little bit better...some of them have a little anti-inflammatory response. But all you're really doing is training your own bacteria to become resistant to that antibiotic,” she said.
</p>

<p>
	 
</p>

<p style="text-align:center;">
	<img alt="id5491899-antibiotic-resistance--1200x92" class="ipsImage" data-ratio="75.10" height="540" width="698" src="https://www.theepochtimes.com/_next/image?url=https://img.theepochtimes.com/assets/uploads/2023/09/14/id5491899-antibiotic-resistance--1200x929.jpeg&amp;w=1200&amp;q=75" />
</p>

<p style="text-align:center;">
	<span style="font-size:12px;"><em>One of the ways bacteria learn to resist antibiotics is by building a membrane around themselves. (Shutterstock)</em></span>
</p>

<p style="text-align:center;">
	 
</p>

<p>
	One way bacteria resist the antibiotic is by developing a thick outer membrane the antibiotic can't penetrate. They can also evolve to remove a component of their own makeup that is targeted by the antibiotic, among other mutations.
</p>

<p>
	 
</p>

<p>
	“Bacteria are very wily creatures, and they are able to evolve in lots of ways in response to antibiotics,” Ms. Humphries said. “Sometimes that can be very regional, so you can have one area of the world where they evolve in one way to become resistant to an antibiotic, and in another area, they can evolve in another way.”
</p>

<p>
	 
</p>

<p>
	That it continues to happen is no more a surprise than the sun rising in the morning. The year he won the Nobel prize for the discovery of penicillin, Alexander Fleming warned its misuse could result in selection for resistant bacteria.
</p>

<p>
	<br />
	Ms. Humphries wrote an opinion article in 2022 in Clinical Chemistry noting both the immediacy of tackling what she called “one of the most urgent threats to modern medicine.”
</p>

<p>
	<br />
	<strong>What Are Doctors Doing?</strong>
</p>

<p>
	<br />
	Antibiotic resistance is an important issue but not as pressing as obesity and opioids, according to doctors interviewed in eight focus groups for a 2020 study published in BMJ Open. They believed key drivers on antibiotic resistance were non-primary care settings, such as urgent care clinics, as well as patients who demand prescriptions.
</p>

<p>
	<br />
	Pew conducted a national survey of 1,550 primary care physicians who said they prescribe antibiotics more appropriately than their peers. They overwhelmingly agreed antibiotic stewardship is needed, but said they would need resources to implement it. And, 79 percent of respondents said without patient education, efforts would be futile.
</p>

<p>
	<br />
	Right or wrong, physicians tend to have the perception that patients want an antibiotic, Ms. Zetts said.
</p>

<p>
	 
</p>

<p>
	Targeting physicians who improperly prescribe antibiotics, Denver Health created the outpatient automated stewardship information system (OASIS) launched this year with support from Pew. It uses electronic health records to track and monitor antibiotic prescriptions. It’s been implemented in Kentucky, which uses more antibiotics per capita than any other state. Kentucky children in rural areas also receive antibiotics at three times the rate of children living in non-rural areas.
</p>

<p>
	<br />
	Using state Medicaid data, OASIS identified all Kentucky physicians prescribing 12 or more antibiotic prescriptions per year. They received letters with their prescribing data and an antibiotic “report card” showing how they compare to their peers.
</p>

<p>
	 
</p>

<p>
	Another novel idea is unofficial prescription pads for non-pharmaceutical interventions, Ms. Zetts said. That way, patients feel supported when they visit their doctors, leaving with over-the-counter suggestions for alleviating their symptoms.
</p>

<p>
	 
</p>

<p>
	Finally, she said there’s the “watchful waiting” concept growing among doctors who encourage patients to treat symptoms at home for a few days, returning only if they need to be re-evaluated because they aren’t improving.
</p>

<p>
	<br />
	<span style="font-size:22px;"><strong>‘Best Guess’ Therapy</strong></span>
</p>

<p>
	<br />
	Another reason doctors say overprescription is a problem is diagnostic uncertainties. Samples taken from patients are cultured on petri dishes in labs—a practice that is time-consuming and not foolproof, Ms. Humphries noted.
</p>

<p>
	<br />
	“Today we are still very reliant on the tools we used 100 years ago,” she said. “We are always beholden to the amount of time it takes the bacteria to grow in the culture.”
</p>

<p>
	 
</p>

<p>
	That could be days in some cases, and severe infections necessitate more immediate action. That’s led to empiric therapy—the “best guess” based on data as to which antibiotic will work—which is right oftentimes, Ms. Humphries said. However, premature prescribing is what leads to patients being treated too narrowly or too broadly, and both scenarios can cause antibiotic resistance.
</p>

<p>
	 
</p>

<p>
	New testing explored in a proof-of-concept study published in 2022 in Nature used machine learning to predict bacterial susceptibilities with surprising accuracy, which Ms. Humphries called “a tantalizing notion.”
</p>

<p>
	<br />
	However, she said it has no way to factor the myriad of pathways a bacteria can mutate. A predictive model misses how this happens—data that is needed for the machine to keep making predictions. Another risk is if the test is “trained” in one region and then marketed in another, it could miss local bacterial resistance trends—as well as globe-trotting mutations.
</p>

<p>
	<br />
	<span style="font-size:22px;"><strong>What Is the Government Doing?</strong></span>
</p>

<p>
	<br />
	Beyond better, faster testing, new antibiotics could help—and there’s been legislation introduced for several years aimed at funding them. That’s because most pharmaceutical companies simply are not interested in developing a product that won’t be a money-maker.
</p>

<p>
	<br />
	According to Pew, drug companies made more than $8 billion in profits on cancer drugs alone between 2014-2016, but incurred a net loss of $100 million on antibiotics during the same period.
</p>

<p>
	<br />
	“If you think of an antibiotic, you only want to take it once, and if it does its job you never have to take it again,” Ms. Humphries said. “If you compare it to an antidepressant or birth control, which you’re going to be taking for a long period of time, the return on investment is very different.”
</p>

<p>
	 
</p>

<p>
	Additionally, treatment guidelines call for older antibiotics to be used when possible to preserve effectiveness of new ones. The business of antibiotics is just bad business for drug makers, which is why many support the Pioneering Antimicrobial Subscriptions To End Upsurging Resistance Act, better known as the PASTEUR Act, which was first introduced in 2020 but has stalled in committee and was reintroduced in 2023.
</p>

<p>
	<br />
	It would provide funding for antibiotic development, which doesn’t look promising according to a World Health Organization report that found only six of the 27 antibiotics in development appear capable of handling antibiotic-resistant infections.
</p>

<p>
	<br />
	<span style="font-size:22px;"><strong>What Can Patients Do?</strong></span>
</p>

<p>
	<br />
	Because the gut is home to at least 70 percent of the body’s immune cells, it makes sense that nurturing good gut health can be protective against infections.
</p>

<p>
	<br />
	It’s in our gut microbiome—home to the largest community of bacteria, viruses, and fungi in the human body—where cross talk between microbes forms the intestinal epithelial layer and mucosal immune system that protect the body from pathogenic invasions.
</p>

<p>
	 
</p>

<p>
	Chronic dysbiosis, an imbalance of microbes that can be created by antibiotics, can cause dysregulated immune responses, inflammation, oxidative stress, and insulin resistance. It puts us at risk for more than just an infection but also other diseases including cancer, according to a 2020 review article in Microorganisms. 
</p>

<p>
	<br />
	According to the Michigan Antibiotic Resistance Reduction Coalition, you can protect your health by:
</p>

<p>
	 
</p>

<p>
	 
</p>

<ul>
	<li>
		Not pressuring doctors to prescribe an antibiotic unless they feel your infection is caused by bacteria.
	</li>
</ul>

<p>
	 
</p>

<ul>
	<li>
		Refusing “just in case” prescriptions and asking for testing.
	</li>
</ul>

<p>
	 
</p>

<ul>
	<li>
		Telling your doctor you are concerned about antibiotic resistance and ask:
	</li>
</ul>

<p style="margin-left:40px;">
	 
</p>

<p style="margin-left:40px;">
	 
</p>

<ul>
	<li style="margin-left:40px;">
		Can you prescribe a “narrow spectrum” antibiotic for this infection? A “broad spectrum” antibiotic kills a wider variety of bacteria and can kill good bacteria in your body leading to side effects such as diarrhea or yeast infections.
	</li>
</ul>

<p style="margin-left:40px;">
	 
</p>

<ul>
	<li style="margin-left:40px;">
		Can this infection be treated with fewer doses?
	</li>
</ul>

<p style="margin-left:40px;">
	 
</p>

<p>
	<strong><a href="https://www.theepochtimes.com/health/the-growing-threat-doctors-and-patients-are-creating-5491895" rel="external nofollow">Source</a></strong>
</p>
]]></description><guid isPermaLink="false">18702</guid><pubDate>Sun, 17 Sep 2023 00:52:53 +0000</pubDate></item><item><title>Prolonged use of acid reflux medication linked to higher dementia risk</title><link>https://nsaneforums.com/news/general-news/prolonged-use-of-acid-reflux-medication-linked-to-higher-dementia-risk-r18701/</link><description><![CDATA[<p>
	Proton-pump inhibitors (PPIs), which are commonly prescribed to manage conditions like acid reflux and stomach ulcers, have been a subject of concern regarding their potential link to an increased risk of dementia. However, research on this topic has produced mixed results.
</p>

<p>
	 
</p>

<p>
	In a recent study published in the Neurology journal, scientists aimed to investigate whether the use of PPIs was associated with the development of dementia. The study began in 1987–1989 and tracked these individuals over time. Importantly, they only included participants who did not have dementia at a later stage of the study, which occurred between 2011 and 2013.
</p>

<p>
	 
</p>

<p>
	To determine PPI usage, the researchers relied on visual records and participants' reports of their medication history during phone calls. They also considered the cumulative exposure to PPIs, which took into account the number of years a person had been using these medications before the later stage of the study. Incident dementia cases were identified through various means, such as in-person assessments, phone-based cognitive tests, hospital records, and death certificates.
</p>

<p>
	 
</p>

<p>
	The study involved 5,712 participants, with an average age of 75 years. After a follow-up period of six years, about 10% of them developed dementia. The analysis revealed that, overall, there was no significant difference in dementia risk between those who used PPIs and those who did not.
</p>

<p>
	 
</p>

<p>
	However, there was an interesting discovery: individuals who had been using PPIs for more than 4.4 years had a slightly higher risk of dementia (33% higher) compared to those who had not used PPIs. This suggests that long-term use of these medications might warrant closer monitoring and consideration of potential risks.
</p>

<p>
	 
</p>

<p>
	<strong><a href="https://www.thedailystar.net/star-health/news/prolonged-use-acid-reflux-medication-linked-higher-dementia-risk-3420796" rel="external nofollow">Source</a></strong>
</p>
]]></description><guid isPermaLink="false">18701</guid><pubDate>Sun, 17 Sep 2023 00:41:16 +0000</pubDate></item><item><title>Antarctic sea-ice at 'mind-blowing' low alarms experts</title><link>https://nsaneforums.com/news/general-news/antarctic-sea-ice-at-mind-blowing-low-alarms-experts-r18700/</link><description><![CDATA[<p>
	<span style="font-size:22px;"><strong>The sea-ice surrounding Antarctica is well below any previous recorded winter level, satellite data shows, a worrying new benchmark for a region that once seemed resistant to global warming.</strong></span>
</p>

<p>
	 
</p>

<p>
	"It's so far outside anything we've seen, it's almost mind-blowing," says Walter Meier, who monitors sea-ice with the National Snow and Ice Data Center.
</p>

<p>
	 
</p>

<p>
	An unstable Antarctica could have far-reaching consequences, polar experts warn.
</p>

<p>
	 
</p>

<p>
	Antarctica's huge ice expanse regulates the planet's temperature, as the white surface reflects the Sun's energy back into the atmosphere and also cools the water beneath and near it.
</p>

<p>
	 
</p>

<p>
	Without its ice cooling the planet, Antarctica could transform from Earth's refrigerator to a radiator, experts say.
</p>

<p>
	 
</p>

<p>
	The ice that floats on the Antarctic Ocean's surface now measures less than 17 million sq km - that is 1.5 million sq km of sea-ice less than the September average, and well below previous winter record lows.
</p>

<p>
	 
</p>

<p>
	That's an area of missing ice about five times the size of the British Isles.
</p>

<p>
	 
</p>

<p style="text-align:center;">
	<img alt="_131098192_antarctic_sea_ice_extent-2023" class="ipsImage" data-ratio="75.10" height="540" width="576" src="https://ichef.bbci.co.uk/news/976/cpsprodpb/7205/production/_131098192_antarctic_sea_ice_extent-2023-09-14-nc.png.webp" />
</p>

<p style="text-align:center;">
	 
</p>

<p>
	Dr Meier is not optimistic that the sea-ice will recover to a significant degree.
</p>

<p>
	 
</p>

<p>
	Scientists are still trying to identify all the factors that led to this year's low sea-ice - but studying trends in Antarctica has historically been challenging.
</p>

<p>
	 
</p>

<p>
	In a year when <span style="color:#c0392b;"><strong>several global heat and ocean temperature records have broken</strong></span>, some scientists insist the low sea-ice is the measure to pay attention to.
</p>

<p>
	 
</p>

<p>
	"We can see how much more vulnerable it is," says Dr Robbie Mallet, of the University of Manitoba, who is based on the Antarctic peninsula.
</p>

<p>
	 
</p>

<p>
	Already braving isolation, extreme cold and powerful winds, this year's thin sea-ice has made his team's work even more difficult. "There is a risk that it breaks off and drifts out to sea with us on it," Dr Mallet says.
</p>

<p>
	 
</p>

<p style="text-align:center;">
	<img alt="_131097603_2-fyc0gyfx0acacyg.jpg.webp" class="ipsImage" data-ratio="75.10" height="404" width="720" src="https://ichef.bbci.co.uk/news/976/cpsprodpb/77D7/production/_131097603_2-fyc0gyfx0acacyg.jpg.webp" />
</p>

<p style="text-align:center;">
	<span style="font-size:12px;"><em>Very thin sea-ice in the foreground - this is a type of sea-ice called "nilas" that forms in very low wind conditions</em></span>
</p>

<p style="text-align:center;">
	 
</p>

<p>
	Sea-ice forms in the continent's winter (March to October) before largely melting in summer, and is part of an interconnected system that also consists of icebergs, land ice and huge ice shelves - floating extensions of land ice jutting out from the coast.
</p>

<p>
	 
</p>

<p>
	Sea-ice acts as a protective sleeve for the ice covering the land and prevents the ocean from heating up.
</p>

<p>
	 
</p>

<p>
	Dr Caroline Holmes at the British Antarctic Survey explains that the impacts of shrinking sea-ice may become evident as the season transitions to summer - when there's potential for an unstoppable feedback loop of ice melting.
</p>

<p>
	 
</p>

<p>
	As more sea-ice disappears, it exposes dark areas of ocean, which absorb sunlight instead of reflecting it, meaning that the heat energy is added into the water, which in turn melts more ice. Scientists call this the ice-albedo effect.
</p>

<p>
	 
</p>

<p>
	That could add a lot more heat to the planet, disrupting Antarctica's usual role as a regulator of global temperatures.
</p>

<p>
	 
</p>

<p style="text-align:center;">
	<img alt="_131098190_antarctic_sea_ice_winter_2023" class="ipsImage" data-ratio="75.10" height="540" width="435" src="https://ichef.bbci.co.uk/news/976/cpsprodpb/23E5/production/_131098190_antarctic_sea_ice_winter_2023_map-2x-nc.png.webp" />
</p>

<p style="text-align:center;">
	 
</p>

<p>
	"Are we awakening this giant of Antarctica?" asks Prof Martin Siegert, a glaciologist at the University of Exeter. It would be "an absolute disaster for the world," he says.
</p>

<p>
	 
</p>

<p>
	There are signs that what is already happening to Antarctica's ice sheets is in the worst-case scenario range of what was predicted, says Prof Anna Hogg, an Earth scientist at the University of Leeds.
</p>

<p>
	 
</p>

<p>
	Since the 1990s, the loss of land ice from Antarctica has contributed 7.2mm to sea-level rise.
</p>

<p>
	 
</p>

<p>
	Even modest increases in sea levels can result in dangerously high storm surges that could wipe out coastal communities. If significant amounts of land ice were to start melting, the impacts would be catastrophic for millions of people around the world.
</p>

<p>
	 
</p>

<p>
	<span style="font-size:26px;"><strong>'We never thought extreme weather events could happen there'</strong></span>
</p>

<p>
	<br />
	As a self-contained continent surrounded by water, Antarctica has its own weather and climate system. Until 2016 Antarctica's winter sea-ice had actually been growing in size.
</p>

<p>
	 
</p>

<ul>
	<li>
		<strong>Antarctic ocean currents heading for collapse</strong>
	</li>
</ul>

<p>
	 
</p>

<ul>
	<li>
		<strong>Oceans break heat record, with grim implications for planet</strong>
	</li>
</ul>

<p>
	<br />
	But in March 2022 an extreme heatwave hit East Antarctica, pushing temperatures to -10C when they should have been closer to -50C.
</p>

<p>
	 
</p>

<p>
	"When I started studying the Antarctic 30 years ago, we never thought extreme weather events could happen there," says Prof Siegert.
</p>

<p>
	Sea-ice has <span style="color:#c0392b;"><strong>broken record minimums in summer for three of the past seven years</strong></span>, including February 2023.
</p>

<p>
	 
</p>

<p>
	Some scientists even believe these low ice records <span style="color:#c0392b;"><strong>may indicate a fundamental change is happening to the continent</strong></span> - a shift in the conditions which have kept the region insulated.
</p>

<p>
	 
</p>

<p>
	Antarctica's remoteness and shortage of historical information means a lot is still unknown.
</p>

<p>
	 
</p>

<p>
	The region is still the "Wild West" in scientific terms, according to Dr Robbie Mallet.
</p>

<p>
	 
</p>

<p>
	Scientists know how far the sea-ice spreads, but not, for instance, how thick it is. Unlocking that puzzle could radically change climate models for the region.
</p>

<p>
	 
</p>

<p style="text-align:center;">
	<img alt="_131097604_2-f5d2wkjw0aavvju.jpg.webp" class="ipsImage" data-ratio="75.10" height="405" width="720" src="https://ichef.bbci.co.uk/news/976/cpsprodpb/9EE7/production/_131097604_2-f5d2wkjw0aavvju.jpg.webp" />
</p>

<p style="text-align:center;">
	<span style="font-size:12px;"><em>Dr Mallet and his team go out every day to measure the ice and snow in Antarctica</em></span>
</p>

<p style="text-align:center;">
	 
</p>

<p>
	At the scientific base Rothera, Dr Mallet is using radar instruments to study sea-ice thickness for an international research project called Defiant.
</p>

<p>
	He and other scientists are still trying to disentangle the causes of the vanishing winter ice.
</p>

<p>
	 
</p>

<p>
	"There is a chance that it's a really freak expression of natural variability," he says, meaning that lots of natural factors could have built up and are affecting the region simultaneously.
</p>

<p>
	 
</p>

<p>
	This year's <span style="color:#c0392b;"><strong>record-warm oceans</strong></span> are likely a contributing factor, scientists suggest - warm water will not freeze.
</p>

<p>
	 
</p>

<p>
	And there may have also been changes in ocean currents and the winds that drive temperatures in the Antarctic.
</p>

<p>
	 
</p>

<p>
	The El Niño weather phenomenon, currently developing in the Pacific, could also be subtly contributing to shrinking sea-ice, although it is still <span style="color:#c0392b;"><strong>weak</strong></span>.
</p>

<p>
	Dr Mallet says there are "very, very good reasons to be worried".
</p>

<p>
	 
</p>

<p>
	"It's potentially a really alarming sign of Antarctic climate change that hasn't been there for the last 40 years. And it's only just emerging now."
</p>

<p>
	 
</p>

<p>
	<strong><a href="https://www.bbc.com/news/science-environment-66724246" rel="external nofollow">Source</a></strong>
</p>
]]></description><guid isPermaLink="false">18700</guid><pubDate>Sun, 17 Sep 2023 00:38:33 +0000</pubDate></item></channel></rss>
