This footage is an excerpt from "Chasing Ice," an award-winning documentary on climate change. On May 28, 2008, Adam LeWinter and director Jeff Orlowski filmed a historic breakup at the Ilulissat Glacier in western Greenland. The calving event lasted 75 minutes, and the glacier retreated a full mile across a calving face three miles wide. The height of the ice is about 3,000 feet — 300 to 400 feet above water, with the rest below water.

To find out more about the film visit ChasingIce.com.

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