Favorite talks
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Play
Nick Bostrom on our biggest problems
16:52 Posted: Apr 2007
Views: 299,792 | Comments: 88
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Play
Ray Kurzweil: The accelerating power of technology
22:56 Posted: Nov 2006
Views: 1,214,458 | Comments: 175
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Aubrey de Grey: A roadmap to end aging
22:45 Posted: Oct 2006
Views: 1,363,868 | Comments: 469