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Giant Iceberg Breaks Off Antarctic Glacier

A massive iceberg, larger than the city of Chicago, broke off of Antarctica's Pine Island Glacier and is now floating freely in the Amundsen Sea.

Published On 07/11/2013
2:00 PM EDT
An aerial shot of Antarctica's Pine Island Glacier. On July 8, 2013, a huge piece of the glacier's ice shelf (the portion that floats on the water) broke off to form a new iceberg. | Angelika Humbert, Alfred-Wegener-Institut