TED Radio Hour
June 19, 2015
Cosmologist Sean Carroll tackles a deceptively simple question: Why does time exist at all? The potential answers point to a surprising view of the nature of the universe, and our place in it.
An idea is the one gift that you can hang onto even after you’ve given it away. The TED Radio Hour, hosted by Guy Raz, is a journey through fascinating ideas: astonishing inventions, fresh approaches to old problems, new ways to think and create.