Chasing Ice is as strong a documentary as I have ever seen concerning the issues of global warming, and that includes Al Gore's terrific Oscar winning Inconvenient Truth. It centers on a man named James Balog, a National Geographic photographer, who with a team sets an array of advanced cameras focusing on various glaciers in Greenland, Iceland and Alaska in order to see the change in the ice coverage over periods of months and years. At first the complex and fragile nature of such a program leads to great technical difficulties, but eventually they do get the program on track, and the results are no less than stunning.
The film is not overtly political. It begins with a montage of "skeptics" of human caused climate change. Balog, who claims to have himself once been a skeptic, ends up getting deeply involved in the project to the detriment of time with his family and the numerous surgeries he gets on his knees. Throughout the film the science of global warming and it's general effects on the planet is tiptoed into, but primarily it lets the visuals do the talking. This film is beautiful and disturbing literally at the same time with treks across ice sheets viewing the melting in real time, images of glaciers breaking off into the sea, and the main focus the time-lapse footage.