The Nature Podcast brings you the best stories from the world of science each week. We cover everything from astronomy to zoology, highlighting the most excitin...
In this episode:00:46 Evidence of ancient brine reveals Bennu’s watery pastAnalysis of samples taken from the asteroid Bennu reveal the presence of organic compounds important for life, and that its parent asteroid likely contained salty, subsurface water. Collected by NASA’s OSIRIS-REx mission, these rocks and dust particles give insights into the chemistry of the early Solar System, and suggest that brines may have been an important place where pre-biotic molecules were formed. As brines are found throughout the Solar System, this finding raises questions about whether similar molecules will be found in places like Jupiter’s moon Europa.Research Article: McCoy et al.Research Article: Glavin et al.News: Asteroid fragments upend theory of how life on Earth bloomed14:22 Research HighlightsHow seaweed farms could capture carbon, and why chimps follow each other to the bathroom.Research Highlight: Seaweed farms dish up climate benefitsResearch Highlight: All together now: chimps engage in contagious peeing16:31 How maize may have supported a civilizationResearchers have found evidence of intensive maize agriculture that could help explain how a mysterious South American society produced enough food to fuel a labour-force big enough to build enormous earth structures. It appears that the Casarabe people, who lived in the Amazon Basin around 500-1400 AD, restructured the landscape to create water conserving infrastructure that allowed for year-round production of maize. While this work provides new insights into how the Casarabe may have established a complex monument-building culture, these people vanished around 600 years ago, and many questions remain about their lives.Research Article: Lombardo et al.Research Article: Hermenegildo et al.25:52 DeepSeek R1 wows scientistsA new AI model from a Chinese company, DeepSeek, rivals the abilities of OpenAI’s o1 — a state-of-the art ‘reasoning’ model — at a fraction of the cost. The release of DeepSeek has thrilled researchers, asked questions about American AI dominance in the area, and spooked stock markets. We discuss why this large language model has sent shockwaves around the world and what it means for the future of AI.News: China’s cheap, open AI model DeepSeek thrills scientists Hosted on Acast. See acast.com/privacy for more information.
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34:51
What's the best way to become a professor? The answer depends on where you are
00:56 How the paths to professorship varyA huge analysis of hiring practices has revealed that criteria to get a promotion to full professorship is hugely variable around the world. The authors suggest that this variability results in researchers from countries that value one type of metric being locked out of professor positions in others. They hope that the database of hiring practices created in this study could help institutions adjust their hiring policies to create a more diverse science workforce.Research Article: Lim et al.News: Want to become a professor? Here’s how hiring criteria differ by country09:36 Research HighlightsLasers reveal hidden tattoos on ancient mummified-skin, and a new pill that cuts flu symptoms and viral levels in the body.Research Highlight: Hidden tattoos on mummy skin emerge under a laser’s lightResearch Highlight: Got flu? Promising drug shortens symptoms12:13 Cancer cells’ broken mitochondria could poison immune cellsResearchers have shown that cancer cells can slip their dysfunctional mitochondria into T cells, limiting the immune system’s cancer-fighting capabilities. Cancer cells are known to steal healthy mitochondria from immune cells to help tumours survive and thrive. Now, researchers have shown mitochondria can move in the opposite direction too, with the donor T cells showing signs of various stress responses that make them less effective when inside a tumour. The team showed that blocking this transfer limited this effect, and hopes that this mechanism could offer a new avenue for boosting the immune system’s response to cancer.Research Article: Ikeda et al.News & Views: Mitochondrial swap from cancer to immune cells thwarts anti-tumour defences21:12 Science and the Gaza conflictNoah Baker and Ehsan Masood turn to the war in Gaza, and discuss what comes next for science as a ceasefire comes into force.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.
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32:42
AI-designed antivenoms could help treat lethal snakebites
00:46 Designing new antivenoms to treat snakebitesResearchers have shown that machine learning can quickly design antivenoms that are effective against lethal snake-toxins, which they hope will help tackle a serious public health issue. Thousands of people die as a result of snakebites each year, but treatment options are limited, expensive and often difficult to access in the resource-poor settings where most bites occur. The computer-aided approach allowed researchers to design two proteins that provided near total protection against individual snake toxins in mouse experiments. While limited in scope, the team behind the work believe these results demonstrate the promise of the approach in designing effective and cheaper treatments for use in humans.Research Article: Vázquez Torres et al.11:28 Research HighlightsHow male wasp spiders use hairs on their legs to sniff out mates, and how noradrenaline drives waves of cleansing fluid through the brain.Research Highlight: Male spiders smell with their legsResearch Highlight: How the brain cleans itself during deep sleep13:53 Earth breaches 1.5 °C climate limit for the first timeNews broke last week that in 2024, Earth’s average temperature climbed to more than 1.5 °C above pre-industrial levels for the first time. Although this is only a single year so far, we discuss what breaking this significant threshold means for the 2015 Paris climate agreement and what climate scientists understand about the speed that Earth is heating up. Nature: Earth breaches 1.5 °C climate limit for the first time: what does it mean?23:39 Briefing ChatNASA delays deciding its strategy for collecting and returning Mars rocks to Earth, and why papers on a handful of bacterial species dominate the scientific literature.Nature: NASA still has no plan for how to bring precious Mars rocks to EarthNature: These are the 20 most-studied bacteria — the majority have been ignoredSubscribe 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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33:52
A new-year round-up of the science stories you may have missed
In this episode of the Nature Podcast, we catch up on some science stories from the holiday period by diving into the Nature Briefing.00:53 The retraction of a controversial COVID study that promoted unproven treatmentA much-critiqued study demonstrating the now-disproven idea that hydroxychloroquine can treat COVID-19 has been retracted — more than four-and-a-half years after it was published.Nature: Controversial COVID study that promoted unproven treatment retracted after four-year saga09:10 The skin’s unexpected immune systemResearchers have discovered that healthy skin — once thought to be a passive barrier — can actually produce antibodies that fight off infections. It’s hoped that the finding could one day lead to the development of needle-free vaccines that can be applied to the skin.Nature: The skin’s ‘surprise’ power: it has its very own immune system13:02 Researchers fear Europa’s icy crust may be much thicker than thoughtNew estimates, based on data collected by NASA’s Juno spacecraft, suggest that the ice on the surface of Jupiter’s moon Europa may be significantly thicker than previously thought. If these estimates prove accurate it could reduce the chances of Europa being habitable for extraterrestrial life.Science: Surprisingly thick ice on Jupiter’s moon Europa complicates hunt for life20:11 Modelling the running prowess of our ancient relatives3D computer simulations of Australopithecus afarensis — an ancient hominin that lived more than three million years ago — reveals that while our relatives could run on two legs, they likely did so at a far slower pace than modern humans.Nature: Humans evolved for distance running — but ancestor ‘Lucy’ didn’t go far or fastSubscribe 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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25:53
Science in 2025: what to expect this year
In this episode, reporter Miryam Naddaf joins us to talk about the big science events to look out for in 2025. We’ll hear about: the latest Moon missions, 30 years of the United Nations' COP climate summits, the return of Donald Trump, and more.Nature: Science in 2025: the events to watch for in the coming year Hosted on Acast. See acast.com/privacy for more information.
The Nature Podcast brings you the best stories from the world of science each week. We cover everything from astronomy to zoology, highlighting the most exciting research from each issue of the Nature journal. We meet the scientists behind the results and provide in-depth analysis from Nature's journalists and editors. Hosted on Acast. See acast.com/privacy for more information.
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