Nature Podcast27 Jul 2022

How humans adapted to digest lactose — after thousands of years of milk drinking

00:45 Working out how the ability to digest milk spread

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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Episoder(911)

What counts as a moon? Huge ‘exosatellite’ sparks debate

00:45 The discovery of a moon-like object in a distant star systemResearch article: Hoy et al.10:34 Research HighlightsNature: Moving floors keep buildings from swaying with the windNature: Wearable s...

22 Jul 0s

Briefing Chat: Sweet! Elusive sugar molecules found in space

In this episode:00:24 A sweet discovery near the Milky Way’s centreNature: First ‘true sugar’ molecule found in space — offering hints to life’s origins05:05 Mathematical texts give insights into Maya...

17 Jul 9min

‘Holy grail’ of naked mole-rat research reveals how queens rule

00:45 The secret scent behind a naked mole-rat's ruleResearch article: Khallaf et al.08:34 Research HighlightsNature: Pair of ‘super-puff’ planets are lighter than candyflossNature: Alpine crossing to...

15 Jul 22min

Briefing Chat: The 30 year-legacy of a science icon – Dolly the sheep

In this episode:00:29 Dolly the sheep’s 30-year legacyMetro: Dolly the sheep at 30: The clone that changed science (and celebrity petdom)Nature: From cloning to gene-editing: the enduring legacy of Do...

10 Jul 10min

Nukes in space? Orbital detector could sniff out warheads

In this episode:00:45 A neutron detector could sniff out a secret space nukeResearch article: Danagoulian11:52 Research HighlightsNature: Volcanic magma sculpts eerie domes on the sea floorNature: Clu...

8 Jul 25min

Togetherness: How co-operation built the world

In this episode, we speak with science journalist Rowan Hooper, whose book Togetherness: Symbiosis and the Hidden Story of Life's Greatest Collaborations takes a deep-dive into the world of co-operati...

1 Jul 31min

Audio long read: Is the peptide craze backed by science? The promise behind the hype

Peptides — short chains of amino acids — have become huge online. The popularity of these molecules has skyrocketed and they are now the latest cure-all trend on social media.But what does the science...

29 Jun 16min

Briefing Chat: What tickling a chimpanzee can tell us about the evolution of speech

Nature staff discuss how apes share a rhythm of laughter, and how AI use may degrade skills in medicine and computer science.00:32 Early evidence suggests that AI use causes skills to atrophyNature: I...

26 Jun 11min