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.
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Religion, Evolution and Self Ascendency: Why Good People are Divided by Politics and Religion
Psychologist Jonathan Haidt asks a simple, but difficult question: why do we search for self-transcendence? Why do we attempt to lose ourselves? In a tour through the science of evolution by group selection, he proposes a provocative answer.The Holstee Manifesto: Lifecycle Video
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Top climate scientist James Hansen tells the story of his involvement in the science of and debate over global climate change. In doing so he outlines the overwhelming evidence that change is happening and why that makes him deeply worried about the future.Defying Gravity
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