[Unedited] Brian Greene with Krista Tippett

[Unedited] Brian Greene with Krista TippettBrian Greene is a professor of physics and mathematics at Columbia University. He is also co-founder of the World Science Festival. His books include "The Elegant Universe," "The Fabric of the Cosmos," and "The Hidden Reality." This interview is edited and produced with music and other features in the On Being episode "Brian Greene — Reimagining the Cosmos." Find more at onbeing.org.