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Antarctica: Landscape of ice

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Ministers and represenatives from about a dozen nations attend a fact-finding visit to the area around Norway's Troll Research Station on Feb. 23, 2009. Here, they tour the ice sheet below the Judulsessen massif of rock towers in Antarctica. The ice sheet sitting atop Antarctica is so vast, up to 3 miles (5 km) thick in some places, that it pushes Earth's crust thousands of feet down. If all that ice melted, it would raise sea levels globally by an estimated 230 feet (70 meters).

PHOTO: Charles J. Hanley/AP

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