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On the Rocks 

The surface area of Glacier National Park’s Sperry Glacier has decreased 75 percent since 1850, when Glacier National Park featured 150 glaciers. In 1968, global warming had reduced that number to just over 50. By 1998, the park had 27 glaciers; that number remains the official count as of today. Scientists predict the park will be glacier-less by 2030.

Image credit: photos courtesy of the Extreme Ice Survey

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Uploaded: Feb 18, 2010 | Post / Read Comments (2)

Image Archives: Stories: the Extreme Ice Survey

  • On the Rocks
  • James Balog installs “Cliff,” a glacier-watching camera, alongside...
  • photos courtesy of the Extreme Ice Survey
  • Feb 18, 2010
  • On the Rocks
  • The surface area of Glacier National Park’s Sperry...
  • photos courtesy of the Extreme Ice Survey
  • Feb 18, 2010
  • On the Rocks
  • Icebergs 200 feet tall, formerly part of the...
  • photos courtesy of the Extreme Ice Survey
  • Feb 18, 2010
  • On the Rocks
  • Glacier National Park’s Grinnell Glacier has retreated steadily...
  • photos courtesy of the Extreme Ice Survey
  • Feb 18, 2010
  • On the Rocks
  • Alaska’s Columbia Glacier, pictured here in 2006, has...
  • photos courtesy of the Extreme Ice Survey
  • Feb 18, 2010

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