Adolfo Doring

Director, Writer

Lester Brown

Self - Founder: Earth Policy Instutute

William R. Catton

Self - Professor Emeritus of Sociology

Bill McKibben

Self - Environmentalist

James Hansen

Self - Physicist, Astronomer

Derrick Jensen

Self - Activist

David Korten

Self - Psychology and Behavioral Systems

Joseph Tainter

Self - Anthropologist, Historian

Jason Bradford

Self - Evolutionary Biologist

Richard Heinberg

Self - Journalist, Educator

Albert Bartlett

Self - Prof. Emeritus of Physics: U of Colorado, Boulder

Max Wolff

Self - Economist: GPIA New School University

Terry Tamminen

Self - Former Head of the California EPA

Ted Caplow

Self - Mechanical & Environmental Engineer

Roscoe Bartlett

Self - 7 Term Representative for the State of Maryland

David Pimentel

Self - Global Agriculturist

Matthew David Savinar

Self - Lawyer

Elke Weber

Self - Professor of Psychology and Management

Kenneth Deffeyes

Self - Geologist, Professor Emeritus Princeton University