Leonardo DiCaprio
Self - Narrator
Janine Benyus
Self
Anna Robertson
Pieter Tans
Michael E. Mann
Daniel Nocera
Katey Walter Anthony
Thom Hartmann
Jennifer Frances Morse
Patricia Lang
Jim White
Guðmundur Ingi Guðbrandsson
Catherine Lund Myhre
Peter Wadhams
Elizabeth Brown
Tony Gossner
Mark Basque
Daniel Rothmann
Ottmar Edenhofer
Brigitte Knopf
Paul Hawken
Linwood Gill
Raymond Baltar
Kate Scow
Ietef Vita
Bren Smith
Staša Puškarić
Martin Hermann
Gabrielle Petron
Don Schreiber
Jürgen Mienert
Pavel Serov
Christoph Gebald
Jan Wurtzbacher
James Murray
Chris Milne
Neil Kermode