Physicist Brian Greene discusses the hidden reality of parallel universes

Dave DeAngelis speaks with physicist Brian Greene about his new book "The Hidden Reality: Parallel Universes and the Deep Laws of the Cosmos."

Brian Greene is Professor of Mathematics & Physics at Columbia University, and is recognized for a number of groundbreaking discoveries in the field of superstring theory. He's the author of two previous bestsellers: “The Elegant Universe” and “The Fabric of the Cosmos”, and his three-part NOVA special based on "The Elegant Universe" won both an Emmy Award and a Peabody Award.