James Balog
Himself - Photographer
Svavar Jonatansson
Himself - Photo Assistant
Adam LeWinter
Himself - EIS Engineer (as Adam Lewinter)
Louie Psihoyos
Himself - Photographer & Oscar Winning Filmmaker
Kitty Boone
Herself - The Aspen Institute
Sylvia Earle
Herself - National Geographic Explorer (as Sylvia Earle Ph.D.)
Dennis Dimick
Himself - National Geographic Editor
Jason Box
Himself - Climatologist, Ohio State University (as Jason Box Ph.D.)
Tad Pfeffer
Himself - Glaciologist, University of Colorado (as Tad Pfeffer Ph.D.)
Suzanne Balog
Herself - James's Wife
Jeff Orlowski
Himself - EIS Videographer