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How humans adapted to digest lactose — after thousands of years of milk drinking
Humans have been drinking milk for thousands of years, but it seems that they were doing so long before the ability to digest it became prevalent. Then around 2000 years ago, this ability became common in Europe, presenting a mystery to researchers – why then? Now by analyzing health data, ancient DNA, and fats residues from thousands of ancient pots, scientists have worked out what caused this trait to suddenly spread throughout Europe.
Research Article: Evershed et al.
News and Views: The mystery of early milk consumption in Europe
08:56 Research Highlights
How genes stolen from outside the animal kingdom have altered insects’ abilities, and a dormant black hole beyond the Milky Way gives insights into these objects' origins.
Research Highlight: Genes purloined from across the tree of life give insects a boost
Research Highlight: A quiet black hole whispers its origin story
11:21 Assessing the addiction potential for therapeutic ketamine
Ketamine has shown great promise as a fast-acting antidepressant, but there have been concerns about the risks of addiction relating to this therapeutic use. Now, a team have looked in mice to see whether ketamine causes the behavioural and neuronal changes characteristic of addictive substances. They find that ketamine likely has a low addiction risk, which could inform future prescribing decisions in humans.
Research article: Simmler et al.
News and Views: A short burst of reward curbs the addictiveness of ketamine
17:51 Briefing Chat
We discuss some highlights from the Nature Briefing. This time, a report shows a significant decline in Australia’s environment and ecosystems, and how adding a gene greatly increases rice yield.
The Conversation: This is Australia’s most important report on the environment’s deteriorating health. We present its grim findings
Science: Supercharged biotech rice yields 40% more grain
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Briefing Chat: The tongue trick that helps sunbirds suck
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24:48|In this episode:00:46 Collecting contrails at 30,000 feetResearch Article: Voigt et al.11:23 Research HighlightsNature: Sunken Soviet nuclear submarine’s radioactive releaseNature: History of ‘forever’ chemicals is written in Antarctic snow13:34 Fakery in scienceApril Fakes DaySubscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday.
Briefing Chat: ‘Zombie cells’ resurrected with new genes
11:01|Nature staff discuss some of the week's top science news.00:18 ‘Zombie cells’ revived with genome transplantNature: ‘Zombie cells’ return from the dead — after a genome transplant05:27 A limit to cloning, in miceNature: Can a mouse be cloned indefinitely? Decades-long experiment has answersSubscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday.Why insects aren't huge: a new challenge to a decades-old idea
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Briefing Chat: Are scientists funny? The evidence is in — and it's no joke
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15:55|In this episode:00:46 Piecing together a biochemical puzzleResearch Article : Lombe et al.12:26 Research HighlightsNature: Electric-vehicle batteries toughen up to beat the heatNature: Live parrots were carried across the Andes before the Incas’ rise
Briefing chat: ‘Can it run Doom?’ — why scientists got brain cells and a satellite to play the classic game
10:34|00:26 Why researchers keep using Doom in their researchNature: How the classic computer game Doom became a tool for scienceSubscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday.