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For a full year, AJ Jacobs followed every piece of health advice he could -- from applying sunscreen by the shotglass to wearing a bicycle helmet while shopping. Onstage at TEDMED, he shares the surprising things he learned.
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David Gallo shows jaw-dropping footage of amazing sea creatures, including a color-shifting cuttlefish, a perfectly camouflaged octopus, and a Times Square's worth of neon light displays from fish who live in the blackest depths of the ocean.
Phil Plait: How to Defend Earth From Asteroids
What's six miles wide and can end civilization in an instant? An asteroid - and there are lots of them out there. With humor and great visuals, Phil Plait enthralls the TEDxBoulder audience with all the ways asteroids can kill, and what we must do to avoid them.
Charlie Todd: The Shared Experience of Absurdity
Charlie Todd causes bizarre, hilarious, and unexpected public scenes: Seventy synchronized dancers in storefront windows, "ghostbusters" running through the New York Public Library, and the annual no-pants subway ride.
James Redfield speaks of UNITY and Oneness
James Redfield is an American author, lecturer, screenwriter and film producer. He is notable for his novel The Celestine Prophecy, which was a novel of the New Age Movement.