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Your books discuss big questions of entire civilizations. How would you encourage others to cultivate the big questions? (1:21) | More videos from Jared Diamond »

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Arianna Huffington

Founder, The Huffington Post

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Arianna Huffington | September 15, 2010 | Wortham Center | The Progressive Forum

Sylvia Earle

Oceanographer

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Sylvia Earle | April 5, 2011 | Wortham Center, Houston | The Progressive Forum

William McDonough

Architect

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William McDonough | April 24, 2012 | Wortham Center | The Progressive Forum

Brian Greene

Theoretical Physicist

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Brian Greene | September 29, 2009 | Wortham Center | The Progressive Forum

Jared Diamond

Acclaimed Scientist, Historian

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Katharine Hayhoe

Leading Climate Scientist

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Leading Climate Scientist Dr. Katharine Hayhoe | The Progressive Forum

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