Paleontologist Emma Schachner proposes a fascinating theory on what made dinosaurs so dominant -- their lungs.This talk was filmed at TEDxLSU. 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 http://go.ted.com/tedxshorts.

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