Chasing Ice follows acclaimed nature photographer James Balog and his team on a bold assignment for National Geographic: to capture images of the arctic that reveal the extent of the Earth’s changing climate. The result is the Extreme Ice Survey. Spanning years of work and technical challenges, EIS shows the breathtaking icescapes of Alaska, Iceland and Greenland, providing undeniable evidence of a changing planet. Hauntingly beautiful images compress years into seconds, and capture ancient mountains of ice in motion as they disappear at a breathtaking rate. Chasing Ice also tells Balog's personal story of transformation, from climate change skeptic to activist, putting his own body on the line to tell the world what is happening through his and his team's imagery.