00:46 A new test to get autonomous vehicles on the road Truly autonomous vehicles, ones that don't require a driver to be present and are driven by AI, aren't yet safe for public use. Part of the reason for this is it has been difficult to train them to deal with rare dangerous situations. Now researchers are unveiling a new approach to present lots of these infrequent events to the AI very rapidly, speeding up the training and testing process. Research Article: Feng et al. News and Views: Hazar...
Mar 22, 2023•19 min•Transcript available on Metacast 00:47 An edited genetic code that prevents viral infection Researchers have engineered bacteria with synthetic genomes to be immune to viral infection. The team streamlined the bacteria’s genetic code, and re-engineered the protein-producing machinery to insert the wrong amino acid if used by a virus, effectively making the bacteria ‘speak’ a different language to any invaders. It’s hoped that this technique could be used to reduce unwanted sharing of genes from modified organisms. Research arti...
Mar 15, 2023•32 min•Transcript available on Metacast 00:47 Wildfire smoke’s chemical composition enhances ozone depletion Smoke from the devastating Australian wildfires of 2019-2020 led to a reduction in ozone levels in the upper atmosphere, but it’s been unclear how. Now, a team proposes that smoke’s particulate matter can enhance the production of ozone depleting chemicals, matching satellite observations during the Australian fires. The results spark concerns that future wildfires, which are set to grow more frequent with ongoing climate chang...
Mar 08, 2023•27 min•Transcript available on Metacast 00:47 How a racing heart could trigger anxiety Anxiety 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. Resear...
Mar 01, 2023•19 min•Transcript available on Metacast 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 episod...
Feb 27, 2023•26 min•Transcript available on Metacast 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 ...
Feb 24, 2023•16 min•Transcript available on Metacast 00:45 A new microscope to look for ‘magic’ angles To 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 ...
Feb 22, 2023•29 min•Transcript available on Metacast 00:47 A metadevice for faster electronics In 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. Researc...
Feb 15, 2023•30 min•Transcript available on Metacast 0:46 The mysterious ring in the distant Solar System Quaoar 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:...
Feb 08, 2023•28 min•Transcript available on Metacast In this episode: 00:47 Chemical analysis of ancient embalming materials Mummification 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 Egy...
Feb 01, 2023•30 min•Transcript available on Metacast 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 res...
Jan 30, 2023•18 min•Transcript available on Metacast 00:45 The role of serine in diabetic neuropathy Nerve 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 diabetes 06:47 ...
Jan 25, 2023•19 min•Transcript available on Metacast In this episode: 00:45 Laser-guided lightning Scientists 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 strikes 09:36 ...
Jan 18, 2023•20 min•Transcript available on Metacast In this episode of the Nature Podcast , we catch up on some science stories from the holiday period by diving into the Nature Briefing . We’ll hear: how Brazil’s President Lula has started to make good on his pro-environment promises; a new theory for why giant ichthyosaurs congregated in one place; how glass frogs hide their blood; about a new statue honouring Henrietta Lacks; and why T. rex might have cooed like a dove. Nature News: Will Brazil’s President Lula keep his climate promises? Scien...
Jan 11, 2023•24 min•Transcript available on Metacast In this episode, reporter Miryam Naddaf joins us to talk about the big science events to look out for in 2023. We'll hear about vaccines, multiple Moon missions and new therapeutics, to name but a few. News: the science events to look out for in 2023 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....
Jan 06, 2023•15 min•Transcript available on Metacast In this episode: 00:53 How virtual meetings can limit creative ideas In April, we heard how a team investigated whether switching from face-to-face to virtual meetings came at a cost to creativity. They showed that people meeting virtually produced fewer creative ideas than those working face-to-face, and suggest that when it comes to idea generation maybe it’s time to turn the camera off. Nature Podcast: 27 April 2022 Research article: Brucks & Levav Video: Why video calls are bad for brain...
Dec 28, 2022•51 min•Transcript available on Metacast 01:07 “Artemis and Dart” In the first of our festive songs, we celebrate some of the big space missions from this year: Artemis which aims to get people back to the moon, and DART which could help defend the Earth from meteor strikes. 03:51 Redacted Headline challenge In this year’s festive game, our competitors work together to try and figure out some Nature Podcast headlines where all the words have been removed. Find out how they get on… 15:57 Research Highlights Research Highlight: Why does ...
Dec 21, 2022•35 min•Transcript available on Metacast In this episode: 00:47 Estimating pandemic-associated mortality This week, a team of researchers working with the World Health Organization have used statistical modelling to estimate the number of excess deaths associated with the COVID-19 pandemic in 2020 and 2021. The work estimates that there were almost 15 million deaths either directly or indirectly attributed to the pandemic, almost three times higher than the official toll. Research article: Msemburi et al. News and Views: Global estimat...
Dec 14, 2022•29 min•Transcript available on Metacast In this episode: 00:45 World’s oldest DNA shows that mastodons roamed ancient Greenland DNA recovered from ancient permafrost has been used to reconstruct what an ecosystem might have looked like two million years ago. Their work suggests that Northern Greenland was much warmer than the frozen desert it is today, with a rich ecosystem of plants and animals. Research Article: Kjær et al. Nature Video: The world's oldest DNA: Extinct beasts of ancient Greenland 08:21 Research Highlights Why low le...
Dec 07, 2022•18 min•Transcript available on Metacast In the second episode of Nature hits the books , science writer and broadcaster Gaia Vince joins us to talk about her new book Nomad Century , which looks at how climate change could render large parts of the globe uninhabitable, and how surviving this catastrophe will require a planned migration of people on a scale never seen before in human history. Nomad Century , Gaia Vince, Allen Lane (2022) Music supplied by Airae/Epidemic Sound/Getty images. Hosted on Acast. See acast.com/privacy for mor...
Dec 02, 2022•26 min•Transcript available on Metacast 00:45 Inert ant pupae produce a previously unobserved fluid Ant larvae metamorphose into adults by pupating. It was assumed that these inert pupae don’t play a role in the wider ant colony, but a team of researchers have found that they actually secrete a fluid that is consumed by both adult ants and larvae. This fluid is rich in proteins and metabolites, and appears to be an important source of larval nutrition. These secretions have now been seen in the pupae of multiple ant species, suggestin...
Nov 30, 2022•20 min•Transcript available on Metacast Big data is playing an increasingly important role in football, with technologies capturing huge amounts of information about players' positions and actions during a match. To make sense of all this information, most elite football teams now employ data analysts plucked from top companies and laboratories. Their insights are helping to steer everything from player transfers to the intensity of training, and have even altered how the game is played. This is an audio version of our Feature: Scienc...
Nov 25, 2022•16 min•Transcript available on Metacast 00:45 Precision positioning without satellites Satellite navigation has revolutionized how humans find their way. However, these systems often struggle in urban areas, where buildings can interfere with weak satellite signals. To counter this, a team has developed an alternative, satellite-free system, which could improve applications that require precise positioning in cities, such as self-driving cars. Research Article: Koelemeij et al. News and Views: Phone signals can help you find your way ...
Nov 23, 2022•24 min•Transcript available on Metacast 00:46 Artemis 1 is go! NASA’s Artemis 1 mission has successfully reached Earth orbit. After weeks of delays and issues, and a nail biting launch, the rocket marks the first step in a new era of moon exploration, with plans to test a new way to return astronauts to the moon. We caught up with reporter for all-things-space, Alex Witze, for the latest. News: Lift off! Artemis Moon rocket launch kicks off new era of human exploration 10:06 Research Highlights The unlevel playing field in women’s foo...
Nov 16, 2022•28 min•Transcript available on Metacast Kathleen Folbigg has spent nearly 20 years in prison after being convicted of killing her four children. But in 2018, a group of scientists began gathering evidence that suggested another possibility for the deaths — that at least two of them were attributable to a genetic mutation that can affect heart function. A judicial inquiry in 2019 failed to reverse Folbigg’s conviction, but this month, the researchers will present new evidence at a second inquiry, which could ultimately spell freedom fo...
Nov 14, 2022•31 min•Transcript available on Metacast 00:49 Separating heavy water with molecular cages Heavy water is molecule very similar to H2O but with deuterium isotopes in the place of hydrogen atoms. Heavy water is useful in nuclear reactions, drug design and nutritional studies, but it's difficult to separate from normal water because they have such similar properties. Now, a team have developed a new separation method using tiny molecular cages, which they hope opens up more energy efficient ways to produce heavy water. Research article: ...
Nov 09, 2022•25 min•Transcript available on Metacast Companies are offering genetic tests of embryos generated by in vitro fertilization that they say allow prospective parents to choose those with the lowest risk for diseases such as diabetes or certain cancers. However, some researchers are concerned about the accuracy and ethics of these tests. This is an audio version of our Feature: The controversial embryo tests that promise a better baby Hosted on Acast. See acast.com/privacy for more information....
Nov 04, 2022•20 min•Transcript available on Metacast 00:46 How flies can move their eyes (a little) It's long been assumed flies’ eyes don’t move, and so to alter their gaze they need to move their heads. Now, researchers have shown that this isn’t quite true and that fruit flies can actually move their retinas using a specific set of muscles, which may allow them to perceive depth. The team also hope that this movement may provide a window into some of the flies’ internal processes. Research article: Fenk et al. 08:54 Research Highlights How the ...
Nov 02, 2022•30 min•Transcript available on Metacast When COVID-19 hit it didn't kill indiscriminately. In the US, being Black, Hispanic, or Native American meant you had a much greater risk of death than if you were white. And these disparities are mirrored across the world. In this episode we explore the complex tale behind this disparity. Throughout history, racism and biases have been embedded within medical technology, along the clinicians who use it. Cultural concepts of race have been falsely conflated with biology. The way medicine is taug...
Oct 28, 2022•40 min•Transcript available on Metacast In this episode: 00:54 Siberian cave offers first-ever glimpse into Neanderthal family By analysing ancient DNA recovered from bone fragments found in two Siberian caves, researchers have identified a set of closely related Neanderthals: a father and daughter, as well as several other more-distant relatives. The work suggests that Neanderthal communities were small, and that females may have left their families to join other groups. Research article: Skov et al. News and Views: The first genomic...
Oct 26, 2022•23 min•Transcript available on Metacast 
