Chasing Ice

National Geographic photographer James Balog wanted to test his skepticism about climate change. With his Extreme Ice Survey, he was able to photograph undeniable changes in some glaciers. In this documentary, Balog deploys a series of time-lapse cameras to capture a long term visual record of the world's changing glaciers. The lengths to which this is accomplished is mind boggling.

It's a compelling watch and an important work. But it's the shocking final result that will amaze you. The visual of these glaciers actually melting right before your eyes will shake you to your core as it did to me.