Favorite talks
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Play
Shawn Achor: The happy secret to better work
12:20 Posted: Feb 2012
Views: 4,314,983 | Comments: 489
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Play
Luis von Ahn: Massive-scale online collaboration
16:39 Posted: Dec 2011
Views: 1,303,020 | Comments: 248
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Simon Sinek: How great leaders inspire action
18:04 Posted: May 2010
Views: 10,700,834 | Comments: 1144