WATCH: Why Is Arctic Sea Ice Disappearing?


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.