Podcast: Supergenes, a New Longevity Diet, and Historic Bowel Movements

How does a supergene help a butterfly outwit a predator? Could a low-protein diet be the key to longevity? And what does 700-year-old human poop reveal about the evolution of our gut bacteria?

Science's Online News Editor David Grimm chats about these stories and more with Science's Sarah Crespi.

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