00:47 How a racing heart could trigger anxietyAnxiety can make the heart beat faster, but could the reverse be true as well? That question has been much debated, but hard to test. Now, a team has shown that artificially increasing a mouse’s heart rate can induce anxiety-like behaviours, and identified an area in the brain that appears to be a key mediator of this response. They hope that this knowledge could help to improve therapies for treating anxiety-related conditions in the future.Research article: Hsueh et al.News & Views: How an anxious heart talks to the brain08:32 Research HighlightsThe chance discovery of the smallest rock seen so far in the Solar System, and the first brain recording from a freely swimming octopus.Research Highlight: Asteroid photobombs JWST practice shotsResearch Highlight: How to measure the brain of an octopus10:57 How NASA’s DART mission beat expectiationsIn September 2022, NASA’s DART spacecraft smashed into a space rock known as Dimorphos, which orbits a near-Earth asteroid. The aim of the mission was to test whether asteroids could be redirected as a method to protect Earth against future impacts. This week, multiple papers have been published describing what researchers have learnt about the impact and its aftermath. Reporter Alex Witze joined us to round up the findings.News: Asteroid lost 1 million kilograms after collision with DART spacecraftResearch article: Thomas et al.Research article: Daly et al.Research article: Li et al.Research article: Cheng et al.Research article: Graykowski et al.Subscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday. Hosted on Acast. See acast.com/privacy for more information.

Twitter has become indispensable to many scientists. It is a place to share findings, raise their profile, and is even used as a source of data in many studies.In recent months though, the site has been in turmoil after a swathe of policy changes in light of Elon Musk's takeover. Never a stranger to misinformation and abuse, these problems have reportedly gotten worse. Additionally, the ability to use Twitter as a source of data is in peril, and malfunctions are more commonplace.In this episode of Nature's Take we discuss how these changes are affecting the platform and the knock-on effects on science. Hosted on Acast. See acast.com/privacy for more information.

Imprinting is a quirk of the immune system in which someone’s initial exposure to a virus biases their immune response when they meet the same virus again.Studies are showing how imprinting shapes people’s responses to SARS-CoV-2; those infected with earlier strains can mount weaker responses to a later Omicron infection.This phenomenon is dampening the hope that variant-tailored boosters will markedly reduce transmission of the virus, although researchers agree that variant-tailored boosters are worth getting because they still provide some immunity, and prevent serious illness.This is an audio version of our Feature: How your first brush with COVID warps your immunity Hosted on Acast. See acast.com/privacy for more information.

00:45 A new microscope to look for ‘magic’ anglesTo better visualise how electrons are ‘moving’ in materials, a team have developed the Quantum Twisting Microscope. This instrument puts two 2D layers of atoms into close contact, allowing them to interact, which can give useful information about their properties. The microscope can also rotate one of the layers, helping researchers look for so-called ‘magic angles’, where 2D materials like graphene can exhibit extraordinary properties.Research article: Inbar et al.News & Views: A twist in the bid to probe electrons in solids09:55 Research HighlightsHow an extinct insect larvae’s prodigiously long ‘neck’ may have helped it hunt, and surveying the levels at which coastal cities are converting water into land.Research Highlight: Extinct insects hunted like predatory giraffesResearch Highlight: Cities worldwide claw vast amounts of land from the sea12:21 How Russia’s invasion has affected science in UkraineThis week marks the first anniversary of Russia’s invasion of Ukraine. We discuss how science has fared in Ukraine over the past 12 months, and how international collaborations are shaping the future of research in the country.News Feature: The fight to keep Ukrainian science alive through a year of warEditorial: Rebuilding Ukrainian science can’t wait — here’s how to startWorld View: Ukrainian science has survived against the odds — now let’s rebuild together19:52 Briefing ChatWe discuss some highlights from the Nature Briefing. This time, the US Food and Drug Administration’s requirements to increase diversity in clinical trials, and research suggesting that snakes are better listeners than previously thought.Nature News: FDA to require diversity plan for clinical trialsScience Alert: Snakes Can Hear You Better Than You ThinkSubscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday. Hosted on Acast. See acast.com/privacy for more information.

00:47 A metadevice for faster electronicsIn the past, increasing the speeds of electronics required designing smaller components, but further reductions in size are being hampered by increasing resistance. To get around this, researchers have demonstrated a ‘metadevice’, which prevents resistance building up by concentrating the flow of signals into specific regions of the device. The hope is that this meta-method could be used to create even smaller electrical components in the future.Research article: Nikoo & Matioli06:27 Research HighlightsHow waiting times for services are higher for people in the US with low incomes, and how your brain hears an alarm while you’re asleep.Research Highlight: Who wastes more time waiting? Income plays a partResearch Highlight: Noise shatters deep sleep thanks to dedicated brain circuit08:52 The research gaps in social media's impact on teen mental healthIn the last ten years, levels of social media use and reported levels of mental health issues among adolescents have both increased. There is much concern that these trends are linked, but hard evidence has been hard to come by. So how can scientists get a better understanding of what’s going on? In a Comment article for Nature, researchers argue that, rather than lumping ‘young people’ into one homogeneous group, future studies should consider where they are in terms of their development, as this could influence the potential impacts of social media use.Comment: How social media affects teen mental health: a missing link19:52 Briefing ChatWe discuss some highlights from the Nature Briefing. This time, we discuss self-burying devices that can plant seeds in remote areas from the air, and scientists’ reactions to a talk by CRISPR-baby researcher He Jiankui.Nature Video: This device corkscrews itself into the ground like a seedNature News: Disgraced CRISPR-baby scientist’s ‘publicity stunt’ frustrates researchers Hosted on Acast. See acast.com/privacy for more information.

0:46 The mysterious ring in the distant Solar SystemQuaoar is a small, rocky object that lies beyond Neptune’s orbit. In an unexpected discovery, researchers have shown that this object has its own orbiting ring, similar to those seen encircling planets like Saturn. However, Quaoar’s ring shouldn’t exist, as it is at a distance far outside the theoretical limit at which rings are thought to be stable, and researchers are trying to figure out why.Research article: Morgado et al.News and Views: A planetary ring in a surprising place07:01 Research HighlightsA repurposed skin-disease drug suppresses alcohol consumption in people with alcohol-use disorder, and how volcanic eruptions may have contributed to social unrest in ancient Egypt.Research Highlight: Pill for a skin disease also curbs excessive drinkingResearch Highlight: Volcanic quartet linked to bad times in ancient Egypt09:26 Air pollutionExposure to polluted air has been linked to millions of deaths each year. But while much is known about the sources and impacts of outdoor air pollution, significantly less is understood about the pollution that people are exposed to indoors, despite it causing a significant health burden. In a Comment article for Nature, a group of researchers argue for more research in order to inform future public health initiatives.Comment: Hidden harms of indoor air pollution — five steps to expose them19:52 Briefing ChatWe discuss some highlights from the Nature Briefing. This time, the discovery of a new type of ice, and how caffeine’s kick comes at a cost.Nature News: Scientists made a new kind of ice that might exist on distant moonsThe Conversation: Nope, coffee won’t give you extra energy. It’ll just borrow a bit that you’ll pay for laterSubscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday. Hosted on Acast. See acast.com/privacy for more information.

In this episode:00:47 Chemical analysis of ancient embalming materialsMummification was a significant part of ancient Egyptian culture but, despite decades of research, much is unknown about the substances and methods used during the process. Now a team have analysed the contents of ceramic vessels uncovered in an embalming workshop that dates back to around 600 BC. The results reveal that some substances assumed to be a single thing were actually mixtures, while some came from far outside Egypt, providing a clearer picture of ancient mummification practices.Research article: Rageot et al.News and Views: Recipes for ancient Egyptian mummification09:11 Research HighlightsModelling how fruit wrinkles as it ages, and a trove of ancient animal skulls suggest Neanderthals may have collected hunting trophies.Research Highlight: A chilli’s wrinkles and a cherry’s dimples explainedResearch Highlight: Neanderthals stashed dozens of animal skulls in a cave — but why?11:28 The race to refine CAR-T therapiesCAR-T therapies are a type of cancer immunotherapy in which part of a person’s immune system – their T cells – are engineered to recognise and attack tumours. While these therapies have been shown to be effective at treating certain blood cancers, they are expensive and can have serious side effects. We hear about efforts to tackle these issues and even expand the range of diseases that CAR-T could be used to treat.News Feature: The race to supercharge cancer-fighting T cells19:36 Briefing ChatWe discuss some highlights from the Nature Briefing. This time, why scientists need to agree on what time it is on the Moon, and the liquid-metal robots that can melt and re-form.Nature News: What time is it on the Moon?New Scientist: Metal robot can melt its way out of tight spaces to escapeNature Video: The race to make a variant-proof COVID vaccineSubscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday. Hosted on Acast. See acast.com/privacy for more information.

A new generation of anti-obesity medications are displaying striking results: drastically diminishing weight, without the serious side effects of previous medications.These drugs have raised hopes the weight can be pharmacologically altered in a safe way, but some researchers are concerned about the drugs' high cost, and that these medications could feed into some societies' obsessions with thinness.This is an audio version of our Feature: The ‘breakthrough’ obesity drugs that have stunned researchers Hosted on Acast. See acast.com/privacy for more information.

00:45 The role of serine in diabetic neuropathyNerve damage is a common complication of diabetes, and can even lead to limb amputation. Thus far, the only way for people to slow its onset is by managing their diet and lifestyle. Now though, research in mice shows how the amino acid serine may be key to this nerve damage, suggesting a potential role for the molecule in future therapeutics.Research article: Handzlik et al.News and Views: Serine deficiency causes complications in diabetes06:47 Research HighlightsDNA from chickens is spreading to their wild relatives, and a hidden magma chamber is revealed beneath an underwater volcano.Research Highlight: Chickens’ DNA is fouling the genomes of their wild relativesResearch Highlight: Underwater volcano near Greece is a sleeping menace09:05 Briefing ChatWe discuss some highlights from the Nature Briefing. This time: how the Hubble Telescope is still helping scientists, and the multimillion-dollar trade of paper authorships.Nature News: Why the Hubble telescope is still in the game — even as JWST wowsNature News: Multimillion-dollar trade in paper authorships alarms publishersNature Video: Drowning in seaweed: How to stop invasive SargassumSubscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday. Hosted on Acast. See acast.com/privacy for more information.

In this episode:00:45 Laser-guided lightningScientists have shown that a specially designed laser can divert the course of lightning strikes in a real-world setting. The team fired the laser into the sky above a communications tower high in the Swiss Alps and altered the course of four strikes. In future they hope that this kind of system could be used to protect large infrastructure, such as airports.Research article: Houard et al.News: This rapid-fire laser diverts lightning strikes09:36 Research HighlightsThe crabs that lean on bacteria to detoxify sulfur from hydrothermal vents, and how a persons’ nasal microbes might exacerbate their hay fever.Research Highlight: Crabs endure a hellish setting — with help from friendsResearch Highlight: Plagued by hay fever? Blame your nasal microbes12:02 Briefing ChatWe discuss some highlights from the Nature Briefing. This time: how “hot mixing” has helped ancient Roman concrete stand the test of time, and the first vaccine for honeybees shows promise.Ars Technica: Ancient Roman concrete could self-heal thanks to “hot mixing” with quicklimeNew York Times: U.S.D.A. Approves First Vaccine for HoneybeesNature Video: 3D printing adds a twist with a novel nozzleSubscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday. Hosted on Acast. See acast.com/privacy for more information.