Nature Podcast Springer Nature Limited

In this episode:
00:46 Using genomics to explain geographic differences in cancer riskThe risk of developing cancer can vary hugely depending on geographic region, but it’s not exactly clear why. To get a better idea, a team has compared the genomes of kidney cancers taken from people around the globe. They reveal a link between geographical locations and specific genetic mutations, suggesting that there are as-yet unknown environmental or chemical exposures in different locations. They hope this work will inform public health efforts to identify and reduce potential causes of cancer.
Research Article: Senkin et al.
News and Views: Genomics reveal unknown mutation-promoting agents at global sites
07:46 Research HighlightsResearch reveals that the extinct ‘sabre-toothed salmon’ actually had tusks, and a common fungus that can clean up both heavy-metal and organic pollutants.
Research Highlight: This giant extinct salmon had tusks like a warthog
Research Highlight: Garden-variety fungus is an expert at environmental clean-ups
09:55 How disrupting a male mouse’s microbiome affects its offspringDisruption of the gut microbiota has been linked to issues with multiple organs. Now a team show disruption can even affect offspring. Male mice given antibiotics targeting gut microbes showed changes to their testes and sperm, which lead to their offspring having a higher probability of severe growth issues and premature death. Although it’s unknown whether a similar effect would be seen in humans, it suggests that factors other than genetics play a role in intergenerational disease susceptibility.
Research article: Argaw-Denboba et al.
News and Views: Dad’s gut microbes matter for pregnancy health and baby’s growth
17:23 Briefing ChatAn updated atlas of the Moon that was a decade in the making, and using AI to design new gene-editing systems.
Nature News: China's Moon atlas is the most detailed ever made
Nature News: ‘ChatGPT for CRISPR’ creates new gene-editing tools
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Many people around the world feel lonely. Chronic loneliness is known to have far-reaching health effects and has been linked to multiple conditions and even early death. But the mechanisms through which feeling alone can lead to poor health is a puzzle. Now, researchers are looking at neurons in the hopes that they may help explain why health issues arise when social needs go unmet.
This is an audio version of our Feature Why loneliness is bad for your health

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In this episode:
00:46 Optical clocks at seaOptical atomic clocks are the most precise timekeeping devices on the planet, but these devices are huge and difficult to work with, limiting their use outside of the lab. Now, researchers have developed a portable optical clock and demonstrated its robustness by sending it on a perilous sea journey. The team hope that this work will pave the way to more practical uses of optical clocks, such as on satellites where they could help improve the accuracy of GPS technologies.
Research Article: Roslund et al.
News and Views: Robust optical clocks promise stable timing in a portable package
09:34 Research HighlightsEvidence of ritual burning of the remains of a Maya royal family, and the first solid detection of an astrophysical tau-neutrino.
Research Highlight: Burnt remains of Maya royalty mark a dramatic power shift
Research Highlight: Detectors deep in South Pole ice pin down elusive tau neutrino
11:52 How marsupial gliding membranes evolvedSeveral marsupial species have evolved a membrane called a patagium that allows them to glide gracefully from tree to tree. Experiments show that mutations in areas of DNA around the gene Emx2 were key to the evolution of this ability, which has appeared independently in multiple marsupial species.
Research article: Moreno et al.
News and Views: Marsupial genomes reveal how a skin membrane for gliding evolved
19:22 Briefing ChatHow overtraining AIs can help them discover novel solutions, and researchers manage to make one-atom thick sheets of ‘goldene’.
Quanta Magazine: How Do Machines ‘Grok’ Data?
Nature news: Meet ‘goldene’: this gilded cousin of graphene is also one atom thick
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Humans setting up home in outer space has long been the preserve of science fiction. Now, thanks to advances in technology and the backing of billionaires, this dream could actually be realised. But is it more likely to be a nightmare?
Kelly and Zach Weinersmith join us to discuss their new book A City on Mars and some of the medical, environmental and legal roadblocks that may prevent humanity from ultimately settling in space.
A City on Mars: Can We Settle Space, Should We Settle Space, and Have We Really Thought This Through? Kelly and Zach Weinersmith Particular Books (2023)

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In this episode:

00:46 Mysterious methane emission from a cool brown dwarfThe James Webb Space Telescope (JWST) is revealing the makeup of brown dwarfs — strange space objects that blur the line between a planet and a star. And it appears that methane in the atmosphere of one of these objects, named W1935, is emitting infrared radiation. Where the energy comes from is a mystery however, researchers hypothesise that the glow could be caused by an aurora in the object’s atmosphere, perhaps driven by an as-yet unseen moon.
Research Article: Faherty et al.

10:44 Research HighlightsThe discovery that bitter taste receptors may date back 450 million years, and the first planet outside the Solar System to boast a rainbow-like phenomenon called a ‘glory’.
Research Highlight: Bitter taste receptors are even older than scientists thought
Research Highlight: An exoplanet is wrapped in glory

13:07 How working memory worksWorking memory is a fundamental process that allows us to temporarily store important information, such as the name of a person we’ve just met. However distractions can easily interrupt this process, leading to these memories vanishing. By looking at the brain activity of people doing working-memory tasks, a team have now confirmed that working memory requires two brain regions: one to hold a memory as long as you focus on it; and another to control its maintenance by helping you to not get distracted.
Research article: Daume et al.
News and Views: Coupled neural activity controls working memory in humans

22:31 Briefing ChatThe bleaching event hitting coral around the world, and the first evidence of a nitrogen-fixing eukaryote.
New York Times: The Widest-Ever Global Coral Crisis Will Hit Within Weeks, Scientists Say
Nature News: Scientists discover first algae that can fix nitrogen — thanks to a tiny cell structure
Nature video: AI and robotics demystify the workings of a fly's wing
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In this episode:
00:46 Mapping ‘ghost roads’ in tropical forestsAcross the world, huge numbers of illegal roads have been cut into forests. However, due to their illicit nature, the exact numbers of these roads and their impacts on ecosystems is poorly understood. To address this, researchers have undertaken a huge mapping exercise across the tropical Asia-Pacific region. Their findings reveal over a million kilometers of roads that don’t appear on official maps, and that their construction is a key driver for deforestation.
Research Article: Engert et al.
10:44 Research HighlightsHow climate change fuelled a record-breaking hailstorm in Spain, and an unusual technique helps researchers detect a tiny starquake.
Research Highlight: Baseball-sized hail in Spain began with a heatwave at sea
Research Highlight: Smallest known starquakes are detected with a subtle shift of colour
13:02 Briefing ChatA clinical trial to test whether ‘mini livers’ can grow in a person’s lymph node, and the proteins that may determine left-handedness.
Nature News: ‘Mini liver’ will grow in person’s own lymph node in bold new trial
Nature News: Right- or left-handed? Protein in embryo cells might help decide
Nature video: How would a starfish wear trousers? Science has an answer
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Subscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday.

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