Decaying ice and icebergs crowd Jökulsárlón, a glacial lagoon in southeast Iceland. The 2.5-by-3-mile (4-by-5-kilometer) lagoon began to form in the 1930s as glaciers from the Vatnajokull icecap started to retreat.
Photographer James Balog hopes that by presenting clear images of rapid glacial retreat, the Extreme Ice Survey will help change public perception of global climate change as an abstract concept and show its real-time effects.