As the glaciers of South America retreat, the supply of freshwater is dwindling and its quality is getting worse. Dark red pools of meltwater from acid rock drainage on Pastoruri peak in the ...
Meltwaters are most acidified, and most laden with heavy metals, in the high Andes, where the glaciers are actively melting. Indigenous villages at these elevations are the most vulnerable, and, being ...
Less attention, however, is paid to the risk of worsening water quality in glacier-fed basins in the Andes. As glaciers melt, they expose long hidden sediments to the elements, producing acidic ...