Favorite talks
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Play
Ron Gutman: The hidden power of smiling
07:26 Posted: May 2011
Views: 1,512,758 | Comments: 209
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Play
Emily Levine's theory of everything
22:52 Posted: Apr 2009
Views: 532,800 | Comments: 129
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Play
Carmen Agra Deedy spins stories
23:34 Posted: Sep 2008
Views: 205,591 | Comments: 47