Nature Podcast

• Trump wants to put humans on Mars: what scientists think of the plan

  In this Podcast Extra, we examine President Donald Trump's calls for NASA to land humans on Mars. Although the White House has proposed spending some US$1 billion in 2026 on Mars plans, critics say the final cost will likely be hundreds of billions of dollars spread over a number of years.This call comes amidst plans to drastically reduce NASA's funding, and the proposed cancelling of dozens of the space agency's missions, including projects to study Earth, Mars and Venus.News: Trump wants to put humans on Mars — here’s what scientists thinkNews: Five key climate and space projects on Trump’s chopping blockNews: Are the Trump team’s actions affecting your research? How to contact Nature Hosted on Acast. See acast.com/privacy for more information.

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• Male mice can grow female organs — if their mothers lack iron

  00:45 Iron’s role in mice sex determinationIron deficiency in mice mothers can sometimes result in their offspring developing female sex organs despite having male sex genes, according to new research. While genetics has been thought to be the primary factor in determining offspring sex in mammals, the new work shows that a lack of iron disrupts an enzyme involved in the development of testes, leading to some mice with male sex-determining genes being born with female genitalia and ovaries. This suggests that sex determination is controlled by more than genetics, but more work will need to be done to understand the precise mechanisms involved.News: Male mice can grow ovaries if their pregnant mums are iron deficientResearch article: Okashita et al.06:31 Research HighlightsHow climate change is making dust storms more likely, and understanding the genetics of a boy who couldn’t feel pain.Research Highlight: The perfect storm for dust storms, thanks to global warmingResearch Highlight: CRISPR helps to show why a boy felt no pain08:51 The role of small-scale fishers in sustainabilityThe contributions that small-scale fishers make to sustainable fishing have been described as ‘invisible’, but now a huge research project has revealed the role this community plays in feeding populations and protecting oceans. Looking at data from 58 countries, researchers have shown that small-scale fishers account for around 40% of the global catch and feed approximately 25% of the world’s population. The people behind the initiative hope that these data can help give a voice to small-scale fishers as people look for ways to feed the world sustainably.Immersive : Small-scale fisheries19:44 Briefing ChatThe discovery of an ‘ambidextrous’ protein; and why humpback whales, despite their enormous eyes, appear to be shortsighted.Nature: Rare ‘ambidextrous’ protein breaks rules of handednessDiscover Magazine: Big Eyes, Blurry Vision: Why Humpback Whales Struggle to See ClearlySubscribe 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.

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• Audio long read: Three ways to cool Earth by pulling carbon from the sky

  With the world looking likely to blow past the temperature targets laid out in the 2015 Paris climate agreement, a growing number of voices are saying that carbon removal technologies will be necessary if humanity is to achieve its long-term climate goals. If these approaches succeed, they could help nations and corporations to meet their climate commitments — and help the world to halt global warming.However, questions remain about the financial viability of these technologies, and whether they can live up to the hype.This is an audio version of our Feature: Three ways to cool Earth by pulling carbon from the sky Hosted on Acast. See acast.com/privacy for more information.

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• AI linked to boom in biomedical papers, infrared contact lenses, and is Earth's core leaking?

  00:33 Was a boom in papers driven by AI?A spike in papers formulaically analysing a public data set has sparked worries that AI is being used to generate low quality and potentially misleading analyses.Nature: AI linked to explosion of low-quality biomedical research papers08:07 Lenses that give humans infrared visionResearchers in China have created contact lenses that can allow humans to see infrared light, which could help with search and rescue missions, sending secret messages and even surgery.Nature: These contact lenses give people infrared vision — even with their eyes shut14:17 Does the Earth's core have a leak?Geologists have uncovered the strongest evidence yet that Earth's core is leaking. Rocks from Hawaii were found to contain isotopes of a rare element, which suggests the material originally came from the core. More work will need to be done to rule out other explanations.Nature: Is Earth’s core leaking? Volcanic rocks provide strongest evidence yetSubscribe 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.

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• These malaria drugs treat the mosquitos — not the people

  00:45 Treating mosquitoes for malariaResearchers have developed two compounds that can kill malaria-causing parasites within mosquitoes, an approach they hope could help reduce transmission of the disease. The team showed that these compounds can be embedded into the plastics used to make bed nets, providing an alternative to insecticide-based malaria-control measures, which are losing efficacy in the face of increased resistance.Research article: Probst et al.10:42 Research HighlightsThe sunlight-powered device that can harvest drinkable water from desert air, and evidence that the world’s richest people are disproportionately responsible for climate impacts.Research Highlight: Atacama sunshine helps to pull water from thin airResearch Highlight: The world’s richest people have an outsized role in climate extremes13:02 The genetics that can lead to pregnancy lossResearchers have found specific genetic mutations that can lead to pregnancy loss. It’s known that errors, such as the duplication of chromosomes, can lead to nonviable pregnancies but less has been known about non-chromosomal genetic errors. The new work identifies DNA sequence changes that can lead to a non-viable pregnancy. This may offer clinicians the ability to screen embryos for these changes to help avoid pregnancy loss.Research article: Arnadottir et al.22:24 Briefing ChatBespoke CRISPR-based therapy treats baby boy with devastating genetic disease, and the ‘anti-spice’ compounds that can lower chillies’ heat.Nature: World’s first personalized CRISPR therapy given to baby with genetic diseaseNew Scientist: Chemists discover 'anti-spice' that could make chilli peppers less hotSubscribe 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.

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