Why do we laugh? That’s the question Neuroscientist Dr. Sophie Scott has spent years trying to answer. She says our laughter has less to do with humor and more to do with communication. We talk the origin of laughter, the meaning behind different kinds of laughter and why laughter really might be the best medicine. Then, we countdown the Top 5 Types of Donuts.

Dr. Sophie Scott: 01:16

Pointless: 39:32

Top 5 Donuts: 54:44

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Dr. Sophie Scott’s Book on the Brain

Dr. Sophie Scott’s Book on the Brain (U.K. Version)

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