Podcast: Big Brains, Land Bridges, and the 'Cocktail Party Problem'

How did a land bridge cause violent temperature swings in Earth's past? Does teamwork build big brains? And how are robots helping us understand the "cocktail party problem?" Science 's Online News Editor David Grimm chats about these stories and more with Science's Sarah Crespi.

(Listen to the full Science podcast and more podcasts.)

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