Favorite talks
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Taryn Simon photographs secret sites
17:32 Posted: Sep 2009
Views: 816,616 | Comments: 147
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John Lloyd inventories the invisible
10:24 Posted: Sep 2009
Views: 519,338 | Comments: 93
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Alain de Botton: A kinder, gentler philosophy of success
16:51 Posted: Jul 2009
Views: 2,018,058 | Comments: 367
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Gordon Brown: Wiring a web for global good
16:43 Posted: Jul 2009
Views: 407,487 | Comments: 519
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Yann Arthus-Bertrand captures fragile Earth in wide-angle
14:54 Posted: Jun 2009
Views: 427,546 | Comments: 129
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Al Gore warns on latest climate trends
07:44 Posted: May 2009
Views: 447,737 | Comments: 830
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A.J. Jacobs: My year of living biblically
17:40 Posted: Jul 2008
Views: 915,743 | Comments: 485
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James Nachtwey: My photographs bear witness
21:56 Posted: Apr 2007
Views: 377,975 | Comments: 90