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Christopher McDougall: Are we born to run?

 

Credit: Aaron/Flickr

Credit: Aaron/Flickr

Christopher McDougall explores the mysteries of the human desire to run. How did running help early humans survive — and what urges from our ancient ancestors spur us on today? At TEDxPennQuarter, McDougall tells the story of the marathoner with a heart of gold, the unlikely ultra-runner, and the hidden tribe in Mexico that runs to live.