Favorite talks
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Lisa Kristine: Photos that bear witness to modern slavery
19:21 Posted: Aug 2012
Views: 1,060,783 | Comments: 348
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Jonathan Haidt: Religion, evolution, and the ecstasy of self-transcendence
18:16 Posted: Mar 2012
Views: 652,700 | Comments: 462
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Paul Root Wolpe: It's time to question bio-engineering
19:42 Posted: Mar 2011
Views: 688,191 | Comments: 557
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Cynthia Breazeal: The rise of personal robots
14:04 Posted: Feb 2011
Views: 416,172 | Comments: 184