How Humans Domesticated Themselves

Researchers have observed that the friendliest male bonobos, like this male resident of Lola Ya Bonobo sanctuary in the Democratic Republic of the Congo, tend to be the most successful. Early humans may have had the same experience with their peers.

Duke anthropologist Brian Hare argues that humans evolved in a way that left us more cooperative and friendlier than our now extinct human cousins, like Neanderthals and Denisovans.

(Image credit: Ley Uwera for NPR)

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