Daniel B. Gold

Narrator (voice)

Ross Gelbspan

Self

Bill McKibben

Self

John 'Bish' Neuhauser

Self

Ted Nordhaus

Self

Rick Piltz

Self

Michael Shellenberger

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)

Judith Helfand

Daniel B. Gold