Scientists are very worried about the melting and darkening of Greenland's ice sheet, the largest mass of ice in the Northern Hemisphere (up to two miles thick).

Author:Gajewski, Karen Ann
Position:WORTH NOTING - Brief article
 
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Scientists are very worried about the melting and darkening of Greenland's ice sheet, the largest mass of ice in the Northern Hemisphere (up to two miles thick). Climate change has increased the growth of algae, which darkens the surface of the ice sheet and leads to more rapid melting as it reflects only 35 percent of solar radiation compared to the 90 percent reflected by white snow. Over the past twenty years, Greenland has been losing more ice than it gains through its annual...

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