Favorite talks
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Play
Patricia Ryan: Don't insist on English!
10:35 Posted: Mar 2011
Views: 863,975 | Comments: 292
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Play
Brené Brown: The power of vulnerability
20:19 Posted: Dec 2010
Views: 9,369,530 | Comments: 1240
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Michael Pritchard: How to make filthy water drinkable
09:31 Posted: Aug 2009
Views: 1,543,985 | Comments: 639