20130308_ted_04.mp3?orgId=1&topicId=1007&d=697&p=57&story=172322740&t=progseg&e=172136499&seg=4&ft=nprml&f=172322740
Part 4 of the TED Radio Hour episode Peering Into Space.
About Brian Greene's TED Talk
Is there more than one universe? Physicist Brian Greene shows how the unanswered questions of physics (starting with a big one: What caused the Big Bang?) have led to the theory that our own universe is just one of many in the "multiverse."
About Brian Greene
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