TakePart — Glaciers in the Bolivian Andes have shrunk 43 percent since 1986 as a result of rising global temperatures, putting millions of people at risk for shortages of drinking water, irrigation, and hydropower.

The losses add up to about 88 square miles of land ice cover, or just under 10 percent of the total area of the world’s tropical glaciers. Glaciers worldwide store about 70 percent of the world’s freshwater.