In this episode:
Humans are notable for their cooperation and display far more altruistic behaviour than other animals, but exactly why this behaviour evolved has been a puzzle. But in a new paper, the two leading theories have been put the test with a model and a real-life experiment. They find that actually neither theory on its own leads to cooperation but a combination is required for humans to help one another.
Research article: Efferson et al.
News and Views: Why reciprocity is common in humans but rare in other animals
The discovery of an ancient stone wall hidden underwater, and the fun that apes have teasing one another.
Research Highlight: Great ‘Stone Age’ wall discovered in Baltic Sea
Research Highlight: What a tease! Great apes pull hair and poke each other for fun
Optical discs, like CDs and DVDs, are an attractive option for long-term data storage, but these discs are limited by their small capacity. Now though, a team has overcome a limitation of conventional disc writing to produce optical discs capable of storing petabits of data, significantly more than the largest available hard disk. The researchers behind the work think their new discs could one day replace the energy-hungry hard disks used in giant data centres, making long-term storage more sustainable.
Research Article: Zhao et al.
20:10 Briefing ChatThe famous fossil that turned out to be a fraud, and why researchers are making hybrid ‘meat-rice’.
Ars Technica: It’s a fake: Mysterious 280 million-year-old fossil is mostly just black paint
Nature News: Introducing meat–rice: grain with added muscles beefs up protein
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Audio long read: The ‘breakthrough’ obesity drugs that have stunned researchers
Amino acid slows nerve damage from diabetes, in mouse study
Laser 'lightning rod' diverts strikes high in the Alps
The science stories you missed over the past four weeks
Science in 2023: what to expect this year
The Nature Podcast’s highlights of 2022
The Nature Podcast Festive Spectacular 2022
COVID deaths: three times the official toll
Oldest DNA reveals two-million-year-old ecosystem
Gaia Vince on how climate change will shape where people live
Mysterious fluid from ant pupae helps feed colony
Audio long read: Science and the World Cup — how big data is transforming football
The satellite-free alternative to GPS
How a key Alzheimer's gene wreaks havoc in the brain
Audio long read: She was convicted of killing her four children. Could a gene mutation set her free?
Molecular cages sift 'heavy' water from near-identical H2O
Audio long read: The controversial embryo tests that promise a better baby
Flies can move their rigid, omnidirectional eyes – a little
Racism in Health: the harms of biased medicine
Ancient DNA reveals family of Neanderthals living in Siberian cave
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