Clive Hamilton as Self

Nathan Myhrvold as Self

David Keith as Self

Matthew Watson as Self

Matthew Watson as Self - Volcanologist

David Keith as Self - Physicist

Clive Hamilton as Self - Ethics researcher

Nathan Myhrvold as Self - Researcher

Connie Hedegaard as Self

Lee Lane as Self - Political Scientist

Stewart M. Patrick as Self - Political Scientist

Régis Briday as Self - Philosopher

Kristine C. Harper as Self - Science Historian

Ken Caldeira as Self - Climate Researcher

Oliver Morton as Self - Science Reporter

Edward Teller as Self - Nuclear Physicist

Michael MacCraken as Self - Climate Researcher

Paul J. Crutzen as Self - Atmosphere Chemist

Lowell Wood as Self - Astro Physicist

Marianne Denicourt as Narrator