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James Hansen: Why I Must Speak Out About Climate Change

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.


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The Power of Affirmation (The EPOD Theory)

The Power of Affirmation (The EPOD Theory)

A live, high-energy presentation performed by Dave Yoho debunks the myth that good talkers make great salespeople. It shows how managers get salespeople to talk less, listen more, understand customers better, and - sell more.

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AJ Jacobs: How Healthy Living Nearly Killed Me

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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Louie Schwartzberg: Nature. Beauty. Gratitude.

Louie Schwartzberg: Nature. Beauty. Gratitude.

Louie Schwartzberg is an award-winning cinematographer, director, and producer whose notable career spans more than three decades providing breathtaking imagery for feature films, television shows, documentaries and commercials.

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Alexander Tsiaras: Conception to Birth - Visualized

Alexander Tsiaras: Conception to Birth - Visualized

Image-maker Alexander Tsiaras shares a powerful medical visualization, showing human development from conception to birth and beyond. (Some graphic images.)

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Shawn Reeder Yosemite Range of Light

Shawn Reeder Yosemite Range of Light

Yosemite National Park, the High Sierra, and the Eastern Sierra are some of the most beautiful places on earth.

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