Futureproof Extra: The Human Swarm

In the animal kingdom "Strangers are Danger!" So how is it then that humans are tolerant? How do we build a society where strangers feel safe among us and we among them?
Well to answer those questions, Johnathan McCrea was joined by Mark Moffett - Research Biologist at the National Museum of Natural History at the Smithsonian and the author of ‘The Human Swarm: How Our Societies Arise, Thrive, and Fall’
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