Jeff Bridges
Role: Self - Narrator (voice)
Piers Sellers
Role: Self - NASA Astronaut & Research Scientist
Wesley Clark
Role: Self - General, US Army (ret.); Former NATO Supreme Allied Cmdr.
Oren R. Lyons
Role: Self - Dist Prof of American Studies, Onondaga Council of Chiefs
Timothy Morton
Role: Self - Philosopher & Author, 'Humankind'
Bob Inglis
Role: Self - Former Congressman (R), South Carolina
Rich Pancost
Role: Self - Professor of Biogeochemistry
Ruth Gates
Role: Self - Marine Biologist; Dir. Hawaii Institute of Marine Biology
Renée Lertzman
Role: Self - Author, ‘Environmental Melancholia’
Leonard Mlodinow
Role: Self - Physicist
Bruce Hood
Role: Self - Prof of Developmental Psychology, Univ of Bristol, UK
Mark Plotkin
Role: Self - Ethnobotanist, Amazon Conservation Team
Amy Jacobson
Role: Self - Evolutionary Anthropologist, Human Behavioral Ecologist
Daniel Goleman
Role: Self - Psychologist, Science Journalist, Author
Stephan Lewandowsky
Role: Self - Professor of Cognitive Psychology, University of Bristol
Nate Hagens
Role: Self - Director, Instit. for the Study of Energy & Our Future
Joseph Tainter
Role: Self - Professor of Anthropology, Author
Ugo Bardi
Role: Self - Prof of Physical Chemistry, Univ of Florence, Italy
Paul Roberts
Role: Self - Journalist; Author, 'The Impulse Society'
Ian Robertson
Role: Self - Cognitive Neuroscientist, Trinity College, Univ of Dublin
