The emissions of frozen CO2 and the tundra around the Arctic Ocean have already begun as it thaws.
New research suggests the Arctic Ocean could be ice-free by 2015, with devastating consequences for the world.
The cold, ice-covered waters surrounding the North Pole, located entirely within the Arctic Circle. It contains the northernmost islands of Canada, Norway, and Russia.
Note: Most of the Arctic Ocean is covered by solid ice, ice floes, and icebergs.