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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 Introverts

In a culture where being social and outgoing are prized above all else, it can be difficult, even shameful, to be an introvert. But, as Susan Cain argues in this passionate talk, introverts bring extraordinary talents and abilities to the world, and should be encouraged and celebrated.

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Tony Robbins: Why We Do What We Do, and How We Can Do It Better

Tony Robbins discusses the "invisible forces" that make us do what we do -- and high-fives Al Gore in the front row.

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Faith Jegede: What I've Learned From My Autistic Brothers

In this video, Faith Jegede tells the moving and funny story of growing up with her two brothers, both autistic.

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Esther Perel: The Secret to Desire in a Long-Term Relationship

This video is a short lecture by Esther Perel about The secret to desire in a long-term relationship.

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Ron Gutman: The Hidden Power of Smiling

Ron Gutman reviews a raft of studies about smiling, and reveals some surprising results. Did you know your smile can be a predictor of how long you'll live -- and that a simple smile has a measurable effect on your overall well-being? Prepare to flex a few facial muscles as you learn more about this evolutionarily contagious behavior.

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