Tech developer Rosie Wright shows how virtual reality can motivate positive social change. This talk was filmed at TEDxCambridgeUniversity. All TEDx events are organized independently by volunteers in the spirit of TED's mission of ideas worth spreading. To learn more about TEDxSHORTS, the TEDx program, or give feedback on this episode, please visit <a href="http://go.ted.com/tedxshorts" rel="nofollow" target="_blank">http://go.ted.com/tedxshorts</a>. 
 
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What does archaeology tell us about human migration?

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