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checkout. Wired.com presents The Geek's Guide to the Galaxy. And here is your host, David Barr

Kirtley.

Hello and welcome to episode 325 of Geek's Guide to the Galaxy.

Our guest today is Yvonneoa Harare. He's a history professor at the Hebrew

University of Jerusalem and its 2011 book Sapiens, a brief history of humankind, has sold

over a million copies and has received endorsements from figures such as Bill Gates,

Mark Zuckerberg, and Barack Obama.

And we'll be speaking with him today about his recent books 21 Lessons for the 21st Century

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