21:26 Posted: Oct 2008
Ted Talks
George Smoot: The design of the universe
19:00 Posted: Nov 2008
Janna Levin: The sound the universe makes
17:43 Posted: Mar 2011
Jill Tarter: Join the SETI search
21:23 Posted: Feb 2009
Jon Nguyen: Tour the Solar System at Home
Lee Smolin: Science and democracy
12:25 Posted: Nov 2008
Leonard Susskind: My friend Richard Feynman
14:41 Posted: May 2011
Lucianne Walkowicz: Finding planets around other stars
Mark Roth: Suspended animation is within our grasp
18:13 Posted: Mar 2010
Martin Rees: Is this our final century?
17:26 Posted: Jan 2007