Leonardo DiCaprio | vypravěč | |
Thom Hartmann | Himself - Author, The Last Hours of... | |
Sandra Postel | Herself - Director, Global Water... | |
David Orr | Himself - Chair, Environmental... | |
Oren Lyons | Himself - Faithkeeper, Turtle Clan,... | |
Sylvia Earle | Herself - Oceanographer,... |
Kenny Ausubel | Himself - Founder, Bioneers | |
Wangari Maathai | Herself - Founder, Greenbelt... | |
Paul Stamets | Himself - Mycologist, Author,... | |
Stephen Hawking | Himself - Lucasian Professor of... | |
Andrew C. Revkin | Himself - Author & Science Reporter,... | |
Paul Hawken | Himself - Author, Environmentalist,... |