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Honey, I ate the kids: how hunger and hormones make mice aggressive
Researchers have uncovered the neural mechanisms that underlie an aggressive behaviour in mice prompted by hunger and hormonal state. Virgin female mice can become aggressive towards mouse pups when they are food deprived, but it seems that the relevant amounts of pregnancy hormones, oestrogen and progesterone, also played a role. By investigating the neurons involved, neuroscientists showed how hunger and hormones are integrated by the brain to lead to aggressive behaviour. This could help researchers understand more about how multiple stimuli are interpreted by the brain, something much harder to study than single stimulus effects.
Research Article: Cao et al.
The overlooked environmental costs of wastewater treatment facilities — plus, an ancient communal hunting system that lasted well into the eighteenth century.
Research Highlight: Wastewater treatment produces surprising amounts of greenhouse gases
Research Highlight: Andean peoples hunted and gathered long after they embraced farming
Around the world, universities and students are scrambling to adapt to the use of generative AI tools such as ChatGPT. And while there is optimism that these tools could improve education, there are also concerns about the ways they could stifle independent, critical thought. We hear about the studies trying to unpick the potential impact of this new technology.
News Feature: Universities are embracing AI: will students get smarter or stop thinking?
A blood test for Alzheimer’s, and what should be the next ‘test’ for AI after the Turing test?
Nature: Blood tests are now approved for Alzheimer’s: how accurate are they?
Nature: AI language models killed the Turing test: do we even need a replacement?
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12:16|Nature staff discuss preliminary data on the effects of GLP-1 drugs on male fertility plus a two-year trial of a brain-computer interface.00:18 Brain-computer interface makes a life-changing impactNature: At-home brain implant gives man with motor neuron disease his daily life back05:39 The possible benefits of obesity drugs on testosteroneNature: The latest benefit of obesity drugs: boosting testosterone and sperm qualitySubscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday.
DNA from hunter-gatherer teeth reveals secrets of ancient plague
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Briefing Chat: The epic journey of Stonehenge’s central stone
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Briefing chat: Spinosaurs with salt glands could have lived in marine environments
11:25|In this episode:00:23 Fossil evidence that spinosaurs had an aquatic lifestyleScience: Some spinosaurs cried salty tears to thrive in brackish waters04:57 The explosive immune cells that kill in minutesNature: Bang! Exploding immune cells splatter potent toxins everywhereSubscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday.Your phone can use tiny skin-colour changes to measure your heart rate
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Briefing Chat: When to trust eyewitness memory – according to science
17:14|In this episode:00:21 When witnesses identify suspects from police line-ups, confidence mattersNature: Memory on trial: the new science of when to trust eyewitness testimony07:15 Registered Reports: how this ‘double peer review’ process could benefit scientists and their resultsNature: Nature is expanding Registered Reports to all the fields in which we publishMajor Ebola outbreak is escalating: what happens next
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