407px-Grinnell_Glacier_1938

Oblique view of Grinnell Glacier taken from the summit of Mount Gould, Glacier National Park in 1938.  The glacier has since largely receded.  In addition to glacier melt, rising temperatures will lead to unprecedented pressures on our agricultural systems and social infrastructure, writes Andrew T. Guzman. Image by T.J. Hileman, courtesy of Glacier National Park Archives.

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