The National Geographic photographer James Balog spend years in Greenland, Iceland and Alaska in order to capture pictures of ice crashing off the glacier. His project prove the effect of global warming to the glacier and won Satellite Award for Best Documentary Film.
If seeing equals believing, then this film's documentation ought to sway the world. But daredevil heroes and sexy screen goddesses probably help the medicine go down.
While their persistence is remarkable, it is rewarded by the breathtaking yet heartbreaking images obtained. In every location, they find irrefutable evidence of the dramatic degradation of the planet's glaciers.
The rapid disappearance of ice mountains, filmed over a period of years, is compressed through time-lapse technology into minutes and seconds. The speeded-up effect is harrowing and also, disturbingly, eerily beautiful.
Still an eco-sceptic? Clap your eyes on this lot. Awe-inspiring, terrifying, transcendently beautiful, and absolutely weighted with significance for the future of the planet.