TED: Brian Greene: Why is our universe fine-tuned for life? - Brian Greene (2012)

Published April 23, 2012 by TEDTalks

At the heart of modern cosmology is a mystery: Why does our universe appear so exquisitely tuned to create the conditions necessary for life? In this tour de force tour of some of science's biggest new discoveries, Brian Greene shows how the mind-boggling idea of a multiverse may hold the answer to the riddle.