The Guardian has posted this clip from the documentary, Chasing Ice. It is astonishing, the largest iceberg calving event ever witnessed. 7.4 cubic kilometers of ice simply fell off the Ilulisat glacier in Greenland. To play the clip, select "full screen" and try to get your mind around the magnitude of what is actually recorded. Massive mountains of ice plunging into the sea and then coming back up 600 feet high. It's breathtaking.