Favorite talks
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Play
Alex Tabarrok on how ideas trump crises
14:33 Posted: Apr 2009
Views: 437,266 | Comments: 193
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Bjorn Lomborg: Global priorities bigger than climate change
16:41 Posted: Jan 2007
Views: 524,279 | Comments: 381
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Ken Robinson says schools kill creativity
19:24 Posted: Jun 2006
Views: 16,533,276 | Comments: 3006