Science

Richard Dawkins

Evolutionary Biologist

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

Jared Diamond

Scientist, anthropologist, sociologist

Jared Diamond | Feb. 24, 2006 | InterContinental Hotel| The Progressive Forum

Sylvia Earle

Oceanographer

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

Tim Flannery

Scientist, Naturalist, Author

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

Jane Goodall

Founder, Jane Goodall Institute

Jane Goodall | March 9, 2011 | Wortham Center, Houston | The Progressive Forum

Brian Greene

Theoretical Physicist

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

James Hansen

Director, NASA Goddard Institute for Space Studies

James Hansen | December 7, 2009 | Wortham Center | The Progressive Forum

George Lakoff

Cognitive Linguist

George Lakoff | February 28, 2008 | Wortham Center | The Progressive Forum

Richard Leakey

Paleoanthropologist, Conservationist, Statesman

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

Nancy Pelosi

Speaker of the U. S. House of Representatives

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

Barry Scheck

Cofounder of the Innocence Project

Barry Scheck | November 18, 2013 | Wortham Center | The Progressive Forum

Eric Schlosser

Investigative Journalist

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