USA - Environment - Lake George
The Knik Glacier in Alaska. Lack of snow-cover expose the ash fallout from the nearby Redoubt Volcano, reducing the albedo effect. There are thousands of glaciers in Alaska, and at least 616 of them are named. Together, they are losing 75 billion tons of ice each year due to melting. That figure is likely to increase in future years. May 2015 was the hottest in 91 years. The blue color is naturally occuring, but is enhanced by underexposing the image. (Photo by Orjan F. Ellingvag/Corbis via Getty Images)
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