When National Geographic photographer James Balog asked, “How can one take a picture of climate change?” his attention was immediately drawn to ice. Soon he was asked to do a cover story on glaciers that became the most popular and well-read piece in the magazine during the last five years. But for Balog, that story marked the beginning of a much larger and longer-term project that would reach epic proportions.

Cast & Crew

Herself - National Geographic Explorer (as Sylvia Earle Ph.D.)
Himself - Climatologist, Ohio State University (as Jason Box Ph.D.)
Himself - Glaciologist, University of Colorado (as Tad Pfeffer Ph.D.)

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