Dan Fagre Ph.D., a research ecologist with the USGS at the base of Mount Clements at Logan Pass, Glacier National Park, Montana , Tuesday, October 7, 2014. Fagre is using repeat photography to document disappearing glaciers using photos taken in the 1880's (first exploration of this area by people with cameras) and since, and comparing them with the present day images he takes in the exact locations of the historic images to study and document the rate at which glaciers are disappearing.
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