Favorite talks
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JK Rowling: The fringe benefits of failure
20:58 Posted: Jan 2010
Views: 1,362,979 | Comments: 305
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Loretta Napoleoni: The intricate economics of terrorism
15:44 Posted: Dec 2009
Views: 270,216 | Comments: 82
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Chimamanda Adichie: The danger of a single story
18:49 Posted: Oct 2009
Views: 4,159,241 | Comments: 760
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Carolyn Steel: How food shapes our cities
15:40 Posted: Oct 2009
Views: 434,476 | Comments: 104
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Mary Roach: 10 things you didn't know about orgasm
16:43 Posted: May 2009
Views: 3,449,505 | Comments: 259
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Newton Aduaka tells the story of Ezra
18:44 Posted: Oct 2008
Views: 215,752 | Comments: 31
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James Nachtwey fights XDR-TB
05:52 Posted: Oct 2008
Views: 225,426 | Comments: 31
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Ory Okolloh on becoming an activist
16:38 Posted: Aug 2008
Views: 171,670 | Comments: 65
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George Ayittey on Cheetahs vs. Hippos
17:50 Posted: Jul 2007
Views: 273,389 | Comments: 83
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Hans Rosling: New insights on poverty
18:57 Posted: Jun 2007
Views: 2,160,279 | Comments: 221