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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 »

Visit Past Speaker Pages

T. Boone Pickens

Businessman, Energy Leader

T. Boone Pickens | March 29, 2009 | Wortham Center | The Progressive Forum

Lester Brown

Founder: Earth Policy Institute

Lester Brown | April 28, 2009 |  October 6, 2013 | The Progressive Forum

Brian Greene

Theoretical Physicist

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

Ruth Ben-Ghiat

Leading Authority on Fascism

Sylvia Earle

Oceanographer

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

Karen Armstrong

Religious Historian