Before and After Photos Reveal How Climate Change Has Affected Glaciers

Glacier National Park is losing its iconic glaciers to a changing climate. In the mid-1800s, this Montana landscape was covered by 150 glaciers—today only 25 remain.

Since 1997, the U.S. Geological Survey has been shooting the Repeat Photography Project, with a systematic search of the archives at Glacier National Park in Montana and Alaska. They use images from the late 1800s and early 1900s as references and rephotograph the same glacial scenes to show just how much these places have changed.



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