Sean Carroll: The arrow of time (Part 1 of 2)Loading … Comment on this Talk 158 total comments In Part 1 of his lecture at the University of Sydney, cosmologist Sean Carroll gives an entertaining and thought-provoking talk about the nature of time, the origin of entropy, and how what happened before the Big Bang might be responsible for the arrow of time we observe today. A physicist, cosmologist and gifted science communicator, Sean Carroll is asking himself -- and asking us to consider -- questions that get at the fundamental nature of the universe. 13 Way, way out there Curated by TED Travel across the universe (or is it universes?) What to Watch Next Sean Carroll: The arrow of time (Part 2) 24:21 Posted: Jan 2010 Views 152,847 | Comments 94 What Your Friends are Watching Related Topics We want you to share our Talks! Just follow the guidelines outlined under our Creative Commons license.