Nature Podcast

• Racist ratings linger in five-star systems — a thumbs up could fix that

  01:14 A simple switch to reduce racist ratingsA study of almost 70,000 ratings showed that racial discrimination could be eliminated from an online platform by switching from a five-star rating system to a thumbs up or down. The platform connected customers to workers who performed home repair jobs, and prior to the shift people categorised by the study authors as ‘non-white’ had lower ratings and got paid less than their white counterparts. Through follow up studies the authors also showed that the five-star system allowed people to impart their personal opinions, whereas a thumbs up or down just focused them on whether a job was good or bad. The team hopes this could be an easy-to-implement shift to tackle racial discrimination.Research Article: Botelho et al.News and Views: Racial bias eliminated when ratings switch from five stars to thumbs up or down11:24 Research HighlightsExperimental evidence that cockatoos like flavouring their food, and the harsh climate of sixteenth century Transylvania.Research Highlight: Gourmet cockatoos like to fancy up their foodResearch Highlight: Transylvanian diaries reveal centuries-old climate extremes14:05 An analysis of retraction hotspotsA Nature investigation has revealed where the most retractions come from, with hospitals in China and institutions in India and Pakistan topping the list. Retractions are a normal part of science and may be a sign of necessary scrutiny, but they can also signal misconduct and use of paper mills. Features Editor Richard Van Noorden joins us to discuss what this means for science and tackling sloppy research.Nature: Exclusive: These universities have the most retracted scientific articles22:43 Briefing ChatLayoffs in the US’s Environmental Protection Agency, reactions to the DEI purge at NASA, and what RFK Jr.’s role as secretary of Health and Human Services could mean for health research.Nature: ‘Targeted and belittled’: scientists at US environmental agency speak out as layoffs beginNature: NASA embraced diversity. Trump’s DEI purge is hitting space scientists hardNature: Vaccine sceptic RFK Jr is now a powerful force in US science: what will he do?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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• Record-breaking neutrino detected by huge underwater telescope

  In this episode:00:45 An elusive, cosmic neutrino with a record-breaking energyAn enormous array of detectors, deep under the Mediterranean Sea, has captured evidence of the highest-energy neutrino particle ever recorded, although researchers aren’t sure exactly where in the cosmos it originated. Calculations revealed this particle had over 30 times the energy of previously detected neutrinos. The team hopes that further study and future detections will help reveal the secrets of high-energy phenomena like supernovae.Research Article: The KM3NeT Collaboration11:34 Research HighlightsHow bonobos adjust their communication to account for what other individuals know, and the discovery of a huge collection of beads adorning the attire of the powerful Copper Age women in Spain.Research Highlight: Bonobos know when you’re in the know ― and when you’re notResearch Highlight: Record-setting trove of buried beads speaks to power of ancient women14:15 US judge puts NIH grant cuts on holdA judge has blocked a policy that would have slashed billions of dollars of funding for US research institutions, which come as part of President Donald Trump’s controversial crackdown on government spending. We discuss the reasoning behind the proposed cuts and the impacts they may have if enacted. We also look at the effects that President Trump’s executive orders targeting diversity, equity and inclusion (DEI) policies and funding are having across the US.Nature: ‘Devastating’ cuts to NIH grants by Trump’s team put on hold by US judgeNature: Have Trump’s anti-DEI orders hit private funders? HHMI halts inclusive science programmeNature: Scientists globally are racing to save vital health databases taken down amid Trump chaos25:50 Briefing ChatWhy the latest odds on asteroid 2024 YR4’s chance of impacting Earth are so hard to calculate, and how the latest version of DeepMind's AlphaGeometry AI has reached the gold-medal level in geometry.New York Times: Why the Odds of an Asteroid Striking Earth in 2032 Keep Going Up (and Down)Nature: DeepMind AI crushes tough maths problems on par with top human solversSubscribe 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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• From viral variants to devastating storms, how names shape the public's reaction to science

  In episode 2 of 'What's in a name' we look how choosing names can help, or hinder, attempts to communicate important messages.Categorizing things is central to science. And there are dozens of systems scientists have created to name everything from the trenches on the sea bed to the stars in the sky.But names have consequences. In our series What’s in a name we explore naming in science and how names impact the world — whether the system of naming species remains in step with society, how the names of diseases can create stigma, or even how the names of scientific concepts can drive the direction of research itself.In episode two, we're looking at how the names chosen by scientists help, or hinder, communication with the public.Well chosen names can quickly convey scientific concepts or health messages — in emergency situations they can even save lives. We'll hear how the systems of naming tropical storms and Covid-19 variants came to be, and how they took different approaches to achieve the same outcome.We'll also consider the language used to talk about climate change, and how the ways of describing it have been used to deliberately introduce uncertainty and confusion.Listen to the first episode Should offensive species names be changed? The organisms that honour dictators, racists and criminalsFor a list of sources please visit the the episode's webpageMusic creditsPremiumaudio/Pond5Richard Smithson/Triple Scoop Music/Getty Images Hosted on Acast. See acast.com/privacy for more information.

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• Kids' real-world arithmetic skills don't transfer to the classroom

  In this episode:00:45 How arithmetic skills don’t transfer between applied and academic environmentsMathematics skills learnt in real-world situations may not translate to the classroom and vice versa, according to a new study. A team surveyed children in India who work in markets, to see whether the skills they learnt there transferred to the classroom. While proficient at solving market-based arithmetic problems, they struggled to solve problems typically used in schools. The reverse was seen for children enrolled in schools with no market-selling experience. The authors hope this finding could help adjust teaching curricula and bridge the gap between intuitive and formal maths.Research Article: Banerjee et al.12:38 Research HighlightsWolverine populations rebound in Sweden and Norway, and why wobbly arrows launch faster than rigid ones.Research Highlight: Who’s the new furry neighbour? It might be a wolverineResearch Highlight: How a wobbly arrow can achieve superpropulsion14:59 The unexpected movements seen in super-dense crowdsA study has revealed that when packed crowds reach a certain density, large groups of people suddenly start to move in circular patterns — a finding that could be used to identify dangerous overcrowding. By assessing footage of the densely-packed San Fermín festival, a team observed this spontaneous phenomenon, and modelled the physics underlying it. Studying the movements of giant crowds has been difficult, and the team hope this work could help event organisers to identify and respond to situations where people could get hurt.Research Article: Gu et al.News and Views: Crowds start to spin when their densities hit a thresholdSound effects:Crowd Cheering - Ambience by GregorQuendel via CC BY 4.0Cupinzano sounds by Europa Press - Footage News via Getty Images24:00 Briefing ChatAn update on the US National Science Foundation’s scrutinizing of grants to comply with President Trump’s directives, and why scratching an itch may have unexpected antibacterial properties.Nature: Exclusive: how NSF is scouring research grants for violations of Trump’s ordersNature: Why it feels good to scratch that itch: the immune benefits of scratchingSubscribe 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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• The AI revolution is running out of data. What can researchers do?

  The explosive improvement in artificial intelligence (AI) technology has largely been driven by making neural networks bigger and training them on more data. But experts suggest that the developers of these systems may soon run out of data to train their models. As a result, teams are taking new approaches, such as searching for other unconventional data sources, or generating new data to train their AIs.This is an audio version of our Feature: The AI revolution is running out of data. What can researchers do? Hosted on Acast. See acast.com/privacy for more information.

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