View of Grinnel Glacier, located in Glacier National Park, Montana, in 1936 (top) and 2010 (bottom). Upon close inspection of this photo pair, the viewer can appreciate the change in the volume of glacial ice that has melted from the Grinnell Glacier. In the 2010 image, the glacier's terminus can be seen along the edge of Upper Grinnell Lake, a feature that did not exist in 1936. Climate change research in Glacier National Park, Montana entails many methods of documenting the landscape change, including the decline of the park's namesake glaciers. With evidence of worldwide glacial recession and modeled predictions that all of the parks glaciers will melt by the year 2030, scientists have begun to document glacial decline through photography.