Brains On: Extinction (Encore)

This is an encore presentation of our Extinction episode. In this episode, co-host Kate Wexler joins us to ask and answers some questions related to extinction: Did dinosaurs have feathers? What is extinction anyway? Could you bring back species that have gone extinct? Plus, Sam Keenan sings a song about our long-lost pal Australopithecus. And of course, there's the mystery sound.

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