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Richard Leakey

Paleoanthropologist, Conservationist, Statesman

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Richard Leakey | October 28, 2010 | Wortham Center | The Progressive Forum

John Kerry

Former Secretary of State, U.S. Senator, Democratic Presidential Candidate

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Lester Brown

Founder: Earth Policy Institute

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

Ruth Ben-Ghiat

Leading Authority on Fascism

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John Paul Stevens

Retired Supreme Court Justice

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John Paul Stevens | November 16, 2010 | Wortham Center | The Progressive Forum

Frank Rich

Columnist

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Frank Rich | October 29, 2006 | Wortham Center | The Progressive Forum

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