Three major glaciers in Alaska and Washington state have thinned and shrunk dramatically, clear signs of a warming climate, according to a study released by the U.S. Geological Survey.
The three glaciers — Gulkana and Wolverine in Alaska and South Cascade in Washington — are considered benchmarks for those in alpine and maritime climates because they closely parallel other glaciers in their regions. They have also been the subject of close scientific scrutiny since 1957.
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