Thomas Berry

饰：Himself

William R. Catton

饰：Himself

Gerald Cecil

饰：Himself

Douglas Crawford-Brown

饰：Himself

John Delafield

饰：Himself

Sally Erickson

饰：Herself

Lyle Estill

饰：Himself

Tom Grizzle

饰：Himself

Laurel Hopper

饰：Herself

Barbara Janeway

饰：Herself

Derrick Jensen

Derrick Jensen

饰：Self

Richard Heinberg

Richard Heinberg

饰：Self

Stuart Pimm

Stuart Pimm

饰：Self