This hauntingly beautiful film documents the Extreme Ice Survey – an unprecedented project conceived by legendary National Geographic photographer James Balog. With a scientific upbringing Balog had been a cynic about the nature of academic research but his first trip north causes him to put his career and his very well-being at risk. With a team of young assistants he deploys cameras across the brutal Arctic to capture a multi-year record of the world's changing glaciers. Filmed in Iceland, Greenland, Alaska and Montana, Balog’s stunning videos compress years into seconds and capture ancient mountains of ice in motion. The time-lapse photograpy reveals the glaciers disappearing at an astonishing rate.

Shot and edited over five years, the film depicts one man’s attempt to deliver evidence of global warming. While not overtly political, his unambiguous photographic record goes to the very heart of the issue of climate change.