James Balog on Capturing our Disappearing Glaciers

James Balog, one of the world's outstanding cinemaphotographers, joins Bill Moyers to explain that "the earth is having a fever." At tremendous risk to his own safety, Balog has been documenting the erosion of glaciers in Switzerland, Greenland, Iceland, and Alaska. His soon-to-be-released film, Chasing Ice, is a breathtaking account of climate change in action.