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.
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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.
Amy Purdy - Living Beyond Limits
Amy Purdy talks about the power of imagination. She explains how our lives are not determined by what happens to us, but by the choices we make. Imagination allows us to break down borders, to move beyond our circumstances, to create and constantly progress.
AJ Jacobs: How Healthy Living Nearly Killed Me
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.
Mary Roach: 10 Things You Didn't Know About Orgasm
Author Mary Roach delves into obscure scientific research, some of it centuries old, to make 10 surprising claims about sexual climax, ranging from the bizarre to the hilarious.