WATCH: Why Is Arctic Sea Ice Disappearing?

| Fri Sep. 27, 2013 3:00 PM EDT

The Arctic is warming nearly three times faster than the rest of the planet, which means ice in the Arctic Circle could be nearly gone in summertime before mid-century. Josefino Comiso, a NASA earth scientist and an author of the report's chapter on the "cryosphere" (that is, the Earth's frozen parts) explains why only the hardiest ice will likely survive year-round.

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