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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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Eric Schlosser

Investigative Journalist

Eric Schlosser | September 24, 2013 | September 30, 2010 | The Progressive Forum

Edward O. Wilson

Biologist, Conservationist, Theorist

Edward O. Wilson | September 27, 2006 | Wortham Center | The Progressive Forum

Heather Cox Richardson

Acclaimed Historian

heather-cox-richardson

Arianna Huffington

Founder, The Huffington Post

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

Ayana Elizabeth Johnson

Leading Marine Biologist, Climate Policy Expert, Writer