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      What Makes a Society More Resilient? Frequent Hardship.

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      Comparing 30,000 years of human history, researchers found that surviving famine, war or climate change helps groups recover more quickly from future shocks.From the Roman Empire to the Maya civilization, history is filled with social collapses. Traditionally, historians have studied these downturns qualitatively, by diving into the twists and turns of individual societies.But scientists like Philip Riris have taken a broader approach, looking for enduring patterns of human behavior on a vaster scale of time and space. In a study published Wednesday, these methods allowed Dr. Riris and his colleagues to answer a profound question: Why are some societies more resilient than others?The study, published in the journal Nature, compared 16 societies scattered across the world, in places like the Yukon and the Australian outback. With powerful statistical models, the researchers analyzed 30,000 years of archaeological records, tracing the impact of wars, famines and climate change. They found that going through downturns enabled societies to get through future shocks faster. The more often a society went through them, the more resilient it eventually became.“Over time, you will suffer less, essentially,” said Dr. Riris, an archaeologist at Bournemouth University in England. “There tends not to be wholesale collapse.”The researchers tracked the history of societies by taking advantage of the way archaeologists tell time. Most organic material, whether it’s charcoal or mussel shells, contains trace amounts of radioactive carbon-14, which gradually breaks down over thousands of years. By measuring the carbon-14 left at an archaeological site, researchers can estimate its age.This approach can also track population changes. As human groups get bigger, they burn more wood, eat more food and leave behind more garbage, all of which can be dated. When those groups shrink, their sites become rarer.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      The Treadmill Desk Might Really Be Worth It

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      Research shows they can indeed deliver fitness benefits while you work — but only if you use them wisely.Experts have long known that extended inactivity can be bad for your body, increasing your risk for heart disease, Type 2 diabetes and other illnesses. As the saying goes, “sitting is the new smoking.” At the same time, decades of studies have shown that walking — even just 4,000 steps a day — is good for the mind and body.Treadmill desks — a setup involving a standing desk with a treadmill beneath it — seem like an ingenious antidote to sedentary office life, and a way to get in a few more healthy steps. But are they worth the investment?As treadmill desks have become more mainstream, researchers have begun to ask how effective they are. A growing body of studies, though often limited, suggests they do help keep people moving, adding perhaps an average of two extra miles of walking per day.What’s more, one small 2023 study suggested regular use of treadmill desks increased peoples’ energy, improved their moods and, in some cases, even made them more productive at their jobs.“Having the ability to add in little bits of activity over the course of a day can add up,” said Akinkunle Oye-Somefun, a doctoral candidate at York University in Toronto and the lead author of a recent meta-analysis of treadmill-desk research. However, he noted, “walking on a treadmill desk is an add on, not something meant to replace your regular exercise routine.”The key to getting the most health benefits out of a treadmill desk, and avoiding boredom or frustration, is to go in with the right expectations and strategy.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      Complications from Alcohol Use Are Rising Among Women

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      New research shows that alcohol-related liver disease and other health problems increased even more than expected among women ages 40 to 64 during the pandemic.The LatestA new study adds to a mounting body of evidence showing that rising alcohol consumption among women is leading to higher rates of death and disease. The report, published Friday in the journal JAMA Health Forum, examined insurance claims data from 2017 to 2021 on more than 14 million Americans ages 15 and older. Researchers found that during the first year and a half of the coronavirus pandemic, women ages 40 to 64 were significantly more likely than expected to experience serious complications like alcohol-related cardiovascular and liver disease, as well as severe withdrawal.The BackgroundAlcohol consumption in the United States has generally increased over the last 20 years, said Dr. Timothy Naimi, the director of the Canadian Institute for Substance Use Research at the University of Victoria. Dr. Naimi was a co-author on a recent paper that showed deaths from excessive alcohol use in the United States rose by nearly 30 percent between 2016 and 2021.While men still die more often from drinking-related causes than women, deaths among women are climbing at a faster rate. “The gap is narrowing,” said Dr. Bryant Shuey, an assistant professor of medicine at the University of Pittsburgh and the lead author of the new study.The ResearchThe study looked at serious health issues related to drinking, including alcohol-related liver and heart disease, inflammation of the stomach lining that led to bleeding, pancreatitis, alcohol-related mood disorders and withdrawal. Researchers compared insurance claims data for these complications with the rates they expected to see based on past prevalence of these conditions.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      What Makes Tiny ‘Water Bears’ So Tough? They Quickly Fix Broken DNA.

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      New research finds that microscopic tardigrades are remarkably good at repairing their DNA after a huge blast of radiation.To introduce her children to the hidden marvels of the animal kingdom a few years ago, Anne De Cian stepped into her garden in Paris. Dr. De Cian, a molecular biologist, gathered bits of moss, then came back inside to soak them in water and place them under a microscope. Her children gazed into the eyepiece at strange, eight-legged creatures clambering over the moss.“They were impressed,” Dr. De Cian said.But she was not finished with the tiny beasts, known as tardigrades. She brought them to her laboratory at the French National Museum of Natural History, where she and her colleagues hit them with gamma rays. The blasts were hundreds of times greater than the radiation required to kill a human being. Yet the tardigrades survived, going on with their lives as if nothing had happened.Scientists have long known that tardigrades are freakishly resistant to radiation, but only now are Dr. De Cian and other researchers uncovering the secrets of their survival. Tardigrades turn out to be masters of molecular repair, able to quickly reassemble piles of shattered DNA, according to a study published on Friday and another from earlier this year.Scientists have been trying to breach the defenses of tardigrades for centuries. In 1776, Lazzaro Spallanzani, an Italian naturalist, described how the animals could dry out completely and then be resurrected with a splash of water. In the subsequent decades, scientists found that tardigrades could withstand crushing pressure, deep freezes and even a trip to outer space.In 1963, a team of French researchers found that tardigrades could withstand massive blasts of X-rays. In more recent studies, researchers have found that some species of tardigrades can withstand a dose of radiation 1,400 times higher than what’s required to kill a person.A preflight photo of a marine tardigrade as seen magnified by 40 times under a light microscope.Boothby Lab/ReutersWe are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      No ‘Hippie Ape’: Bonobos Are Often Aggressive, Study Finds

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      Despite their peaceful reputation, bonobos act aggressively more often than their chimpanzee cousins, a new study found.In the early 1900s, primatologists noticed a group of apes in central Africa with a distinctly slender build; they called them “pygmy chimpanzees.” But as the years passed, it became clear that those animals, now known as bonobos, were profoundly different from chimpanzees.Chimpanzee societies are dominated by males that kill other males, raid the territory of neighboring troops and defend their own ground with border patrols. Male chimpanzees also attack females to coerce them into mating, and sometimes even kill infants. Among bonobos, in contrast, females are dominant. Males do not go on patrols, form alliances or kill other bonobos. And bonobos usually resolve their disputes with sex — lots of it.Bonobos became famous for showing that nature didn’t always have to be red in tooth and claw. “Bonobos are an icon for peace and love, the world’s ‘hippie chimps,’” Sally Coxe, a conservationist, said in 2006.But these sweeping claims were not based on much data. Because bonobos live in remote, swampy rainforests, it has been much more difficult to observe them in the wild than chimpanzees. More recent research has shown that bonobos live a more aggressive life than their reputation would suggest.In a study based on thousands of hours of observations in the wild published on Friday, for example, researchers found that male bonobos commit acts of aggression nearly three times as often as male chimpanzees do.“There is no ‘hippie ape,’” said Maud Mouginot, a biological anthropologist at Boston University who led the analysis.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      PFAS ‘Forever Chemicals’ Are Pervasive in Water Worldwide, Study Finds

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      A global survey found harmful levels even in water samples taken far any obvious source of contamination.They’re in makeup, dental floss and menstrual products. They’re in nonstick pans and takeout food wrappers. Same with rain jackets and firefighting equipment, as well as pesticides and artificial turf on sports fields.They’re PFAS: a class of man-made chemicals called per- and polyfluoroalkyl substances. They are also called “forever chemicals” because the bonds in their chemical compounds are so strong they don’t break down for hundreds to thousands of years, if at all.They’re also in our water.A new study of more than 45,000 water samples around the world found that about 31 percent of groundwater samples tested that weren’t near any obvious source of contamination have PFAS levels considered harmful to human health by the Environmental Protection Agency. About 16 percent of surface water samples tested, which were also not near any known source, have similarly hazardous PFAS levels.This finding “sets off alarm bells,” said Denis O’Carroll, a professor of civil and environmental engineering at the University of New South Wales and one of the authors of the study, which was published on Monday in Nature Geoscience. “Not just for PFAS, but also for all the other chemicals that we put out into the environment. We don’t necessarily know their long-term impacts to us or the ecosystem.”High levels of exposure to some PFAS chemicals have been linked to higher cholesterol, liver and immune system damage, hypertension and pre-eclampsia during pregnancy, as well as kidney and testicular cancer.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      Large Scientific Review Confirms the Benefits of Physical Touch

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      Premature babies especially benefited from skin-to-skin contact, and women tended to respond more strongly than men did.A hug, a handshake, a therapeutic massage. A newborn lying on a mother’s bare chest.Physical touch can buoy well-being and lessen pain, depression and anxiety, according to a large new analysis of published research released on Monday in the journal Nature Human Behaviour.Researchers from Germany and the Netherlands systematically reviewed years of research on touch, strokes, hugs and rubs. They also combined data from 137 studies, which included nearly 13,000 adults, children and infants. Each study compared individuals who had been physically touched in some way over the course of an experiment — or had touched an object like a fuzzy stuffed toy — to similar individuals who had not.For example, one study showed that daily 20-minute gentle massages for six weeks in older people with dementia decreased aggressiveness and reduced the levels of a stress marker in the blood. Another found that massages boosted the mood of breast cancer patients. One study even showed that healthy young adults who caressed a robotic baby seal were happier, and felt less pain from a mild heat stimulus, than those who read an article about an astronomer.Positive effects were particularly noticeable in premature babies, who “massively improve” with skin-to-skin contact, said Frédéric Michon, a researcher at the Netherlands Institute for Neuroscience and one of the study’s authors.“There have been a lot of claims that touch is good, touch is healthy, touch is something that we all need,” said Rebecca Boehme, a neuroscientist at Linkoping University in Sweden, who reviewed the study for the journal. “But actually, nobody had looked at it from this broad, bird’s eye perspective.”The analysis revealed some interesting and sometimes mysterious patterns. Among adults, sick people showed greater mental health benefits from touch than healthy people did. Who was doing the touching — a familiar person or a health care worker — didn’t matter. But the source of the touch did matter to newborns.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      The Sunday Read: ‘What Deathbed Visions Teach Us About Living’

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      Jack D’Isidoro and Anna Diamond and Sophia Lanman and Listen and follow The DailyApple Podcasts | SpotifyChris Kerr was 12 when he first observed a deathbed vision. His memory of that summer in 1974 is blurred, but not the sense of mystery he felt at the bedside of his dying father. Throughout Kerr’s childhood in Toronto, his father, a surgeon, was too busy to spend much time with his son, except for an annual fishing trip they took, just the two of them, to the Canadian wilderness. Gaunt and weakened by cancer at 42, his father reached for the buttons on Kerr’s shirt, fiddled with them and said something about getting ready to catch the plane to their cabin in the woods. “I knew intuitively, I knew wherever he was, must be a good place because we were going fishing,” Kerr told me.Kerr now calls what he witnessed an end-of-life vision. His father wasn’t delusional, he believes. His mind was taking him to a time and place where he and his son could be together, in the wilds of northern Canada.Kerr followed his father into medicine, and in the last 10 years he has hired a permanent research team that expanded studies on deathbed visions to include interviews with patients receiving hospice care at home and with their families, deepening researchers’ understanding of the variety and profundity of these visions.There are a lot of ways to listen to ‘The Daily.’ Here’s how.We want to hear from you. Tune in, and tell us what you think. Email us at thedaily@nytimes.com. Follow Michael Barbaro on X: @mikiebarb. And if you’re interested in advertising with The Daily, write to us at thedaily-ads@nytimes.com.Additional production for The Sunday Read was contributed by Isabella Anderson, Anna Diamond, Sarah Diamond, Elena Hecht, Emma Kehlbeck, Tanya Pérez and Krish Seenivasan. More