Arctic

Alaska

Alaska air pollution holds clues for other Arctic climates

In the pristine expanse of Alaska’s interior lies a dirty secret: some of the most polluted winter air in the United States can be found in and around Fairbanks. The Fairbanks North Star Borough, which includes Alaska’s second largest city, routinely exceeds limits set by the U.S. Environmental Protection Agency for particle pollution that can

Science

Warming shrinks Arctic Ocean ice to 2nd lowest on record

Ice in the Arctic Ocean melted to its second lowest level on record this summer, triggered by global warming along with natural forces, U.S. scientists reported Monday. The extent of ice-covered ocean at the North Pole and extending further south to Alaska, Canada, Greenland and Russia reached its summertime low of 1.4 million square miles

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