"The Arctic is the world's global warming laboratory. Sadly, the test results are coming in strong. An eight-nation group reported this month on 10 significant findings — and not all of them are projections, a criticism of previous studies. Glaciers are already melting, permafrost is thawing, sea ice is shrinking.
The Arctic has been expected to take the brunt of global warming, and that theory is holding true. As snow and ice melt, the now open land and water absorb more of the sun's heat. That creates a self-reinforcing loop that accelerates the warming faster there than in other regions.
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The Arctic Climate Impact Assessment adds to the case that global warming is real, moving in tandem with the increased carbon dioxide in the atmosphere from burning fossil fuels. A recent report from the Pew Center on Global Climate Change finds the same patterns in its review of studies elsewhere, including additional examples of animals that already are shifting their range.
Yet the United States remains on the sidelines. "Not in this administration" was the response of White House science adviser John Marburger to a Scripps Howard reporter who asked, after the studies were released, about the potential for regulation of greenhouse-gas emissions."
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http://www.twincities.com/mld/twincities/news/editorial/10226744.htm?1c