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Mexico Mining Spill

In this Aug. 12, 2014 photo, the contaminated Sonora river makes its way through the hills near the town of Mazocahui, in the northern state of Sonora, Mexico. Eighty-eight schools in Sonora state did not open Monday along with the rest of the country because of the danger of water contaminated by the spill of 10 million gallons (40,000 cubic meters) of acids from a copper mine into this and another river in the region. (AP Photo/El Imparcial, Julian Ortega)