TED TalksBrian Greene: Is our universe the only universe?

TV-PG
2012 • E31    Apr 23, 2012    15m
Is there more than one universe? In this visually rich, action-packed talk, 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."

Where to Watch TED Talks - 2012 • E31

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