Daniel B. Gold
Narrator (voice)
Ross Gelbspan
Self
Bill McKibben
Self
Ted Nordhaus
Self
Rick Piltz
Self
Sheila Watt-Cloutier
Self
Tony Blair
Self (archive footage)
Tom Brokaw
Self (archive footage)
George W. Bush
Self (archive footage)
Philip Cooney
Self
Dr. Heidi Cullen
Self
Kert Davies
Self
Leonardo DiCaprio
Self (archive footage)
Myron Ebell
Self
Anne Gelbspan
Self
Michel Gelobter
Self
Leona Goodhope
Self
Al Gore
Self (archive footage)
Sean Hannity
Self (archive footage)
James Hansen
Self (archive footage)
Jamie Henn
Self
James Inhofe
Self (archive footage) (as Sen. James Inhofe)
Jay Inslee
Self
Darrell Issa
Self (archive footage)
Bill Maher
Self (archive footage)
Dan Rather
Self (archive footage)
Oprah Winfrey
Self (archive footage)