Nature Causes Up to a Third of Arctic Ice Loss

Natural climate variations could explain up to 30 percent of the loss in Arctic sea ice since the 1970s, scientists have found.

Sea ice coverage at the North Pole has shrunk dramatically over the past 40 years. The ice is now more than a third smaller each September following the summer melt than it was in the 1970s. This affects wildlife, while potentially opening up new northern sea routes and controversial opportunities for oil and gas exploration.

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