Environment

Lester Brown

Founder: Earth Policy Institute

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

AL Gore

Nobel laureate, Environmentalist

Al Gore | June 7, 2006 | Hobby Center | The Progressive Forum

James Hansen

Director, NASA Goddard Institute for Space Studies

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

Robert F. Kennedy, Jr.

Environmental Activist

Robert F. Kennedy, Jr. | November 5, 2012 | Wortham Center | The Progressive For

Richard Leakey

Paleoanthropologist, Conservationist, Statesman

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

Bill McKibben

Cofounder 350.org

Bill McKibben | April 21, 2014 | 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

Michael Pollan

Journalist

Michael Pollan | October 27, 2011 | Wortham Center | The Progressive Forum