Jeff Bridges

~ as ~

Self - Narrator (voice)

Piers Sellers

~ as ~

Self - NASA Astronaut & Research Scientist

Wesley Clark

~ as ~

Self - General, US Army (ret.); Former NATO Supreme Allied Cmdr.

Oren R. Lyons

~ as ~

Self - Dist Prof of American Studies, Onondaga Council of Chiefs

Timothy Morton

~ as ~

Self - Philosopher & Author, 'Humankind'

Bob Inglis

~ as ~

Self - Former Congressman (R), South Carolina

Rich Pancost

~ as ~

Self - Professor of Biogeochemistry

Ruth Gates

~ as ~

Self - Marine Biologist; Dir. Hawaii Institute of Marine Biology

Renée Lertzman

~ as ~

Self - Author, ‘Environmental Melancholia’

Leonard Mlodinow

~ as ~

Self - Physicist