Left: Summer 1938. Right: Summer 2005. (Photo: U.S. Geological Survey)
Grinnell Glacier, Glacier National Park, MontanaThese photos accurately reflect what is happening at Grinnell Glacier, which has been reduced by nearly 90 percent over the past century, and elsewhere in Glacier National Park, according to glaciologists. “When Glacier National Park was formed back in 1912 there were 100 glaciers in the park,” says Lonnie Thompson, a professor at the Ohio State University. “This year there are 26 glaciers, and those are expected to disappear within the next 30 years.”
