Leonardo DiCaprio
Self - Narrator (voice)
Pemeran
Kenny Ausubel
Self
Sylvia Earle
Self
John Trudell
Self
Wangari Maathai
Self
Oren R. Lyons
Self
David Suzuki
Self
Stephen Hawking
Self
Janine Benyus
Self
Gloria Flora
Self
Michel Gelobter
Self
Михаил Горбачёв
Self
