This huge glacier discharges more ice into the ocean than any other glacier in the Northern Hemisphere. The helicopter that looks so tiny in the beginning of the video gives a good idea of the staggering immensity of the ice face. Ilulissat is four miles (six and a half kilometers) wide, and the cliff face you see here can be well over 300 feet (92 meters) tall. The glacier gallops along at a speed of about 125 feet (38 meters) a day, double what it was 10 years ago, apparently due to warming temperatures and meltwater that lubricates the glacier bed.

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