Favorite talks
-
Play
Diane J. Savino: The case for same-sex marriage
07:33 Posted: Aug 2010
Views: 301,618 | Comments: 647
-
Play
Sam Harris: Science can answer moral questions
23:06 Posted: Mar 2010
Views: 1,337,363 | Comments: 2645
-
Play
David Griffin: How photography connects us
14:53 Posted: Aug 2008
Views: 608,450 | Comments: 62
-
Play
David Deutsch: Chemical scum that dream of distant quasars
19:00 Posted: Sep 2006
Views: 636,999 | Comments: 166