Favorite talks
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Salman Khan: Let's use video to reinvent education
20:27 Posted: Mar 2011
Views: 2,473,214 | Comments: 440
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Willie Smits: How to restore a rainforest
20:42 Posted: Mar 2009
Views: 401,187 | Comments: 124
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Clay Shirky: Institutions vs. collaboration
20:46 Posted: Jul 2008
Views: 466,077 | Comments: 57
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Paul Ewald asks, Can we domesticate germs?
17:51 Posted: May 2008
Views: 219,407 | Comments: 62
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James Kunstler: How bad architecture wrecked cities
19:44 Posted: May 2007
Views: 793,351 | Comments: 227