Mona Amodeo

饰：Self

Paul Connett

饰：Self

Gary Hirshberg

饰：Self

Jeffrey Hollender

饰：Self

Adam Gardner

饰：Himself

达丽尔·汉纳

Daryl Hannah

饰：Narrator

伊冯·乔伊纳德

Yvon Chouinard

饰：Self

Les Brown

Les Brown

Janine Benyus

Janine Benyus

饰：Self

斯蒂夫·佩吉

Steven Page

饰：Self

大卫·铃木

David Suzuki

饰：Self

Ray Anderson

饰：Self

John Picard

John Picard

饰：Self