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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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Ken Burns

Acclaimed Documentary Filmmaker

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Ken Burns | November 13, 2007 | Wortham Center | The Progressive Forum

Katharine Hayhoe

Leading Climate Scientist

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Leading Climate Scientist Dr. Katharine Hayhoe | The Progressive Forum

Richard Dawkins

Evolutionary Biologist

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Richard Dawkins | October 5, 2010 | Wortham Center | The Progressive Forum

Tim Flannery

Scientist, Naturalist, Author

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Tim Flannery | March 19, 2007 | Wortham Center | The Progressive Forum

Nancy Pelosi

Speaker of the U. S. House of Representatives

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Nancy Pelosi | June 12, 2009 | Wortham Center | The Progressive Forum

Alice Waters

Restaurateur, Author, Activist

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Alice Waters | February 27, 2012 | Wortham Center | The Progressive Forum

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