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About This File
Joined: 16th December 2010
Media: 37

This video was originally produced and disseminated by TED. It is being posted here in accordance with TED's Creative Common's license. For more on this see http://www.ted.com/pages/195.

Runtime: 03:27
Size: 12.27MB
Added: 23rd August 2011
Views: 788

Category: High School
Tags: Challenge

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