Jared Diamond, on 'The World Until Yesterday.'

The World Until Yesterday
"The World Until Yesterday" by Jared Diamond.
Courtesy Penguin Group USA

Jared Diamond is a physician, biophysicist, ethnographer and a professor of geography at UCLA. The Pulitzer Prize-winning author of "Guns, Germs and Steel," "Collapse," and "The World Until Yesterday" spoke in December 2014 at the Commonwealth Club of California.

The moderator is Kishore Hari of the Bay Area Science Festival at the University of California.