20141024_ted_02.mp3?orgId=1&topicId=1136&p=57&story=357837972&t=progseg&e=357837221&seg=2&ft=nprml&f=357837972

Part 2 of the TED Radio Hour episode How It All Began .

About David Christian's TED Talk

David Christian explains the history of the universe from the big bang, and how humans occupy little more than a millisecond on that cosmic timeline.

About David Christian

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