In Cuba, Cleaner Rivers Follow Greener Farming

For the first time in more than 50 years, a joint team of Cuban and U.S. field scientists studied the water quality of twenty-five Cuban rivers and found little damage after centuries of sugarcane production. They also found nutrient pollution in Cuba’s rivers much lower than the Mississippi River. Cuba’s shift to conservation agriculture after the collapse of the Soviet Union—and reduced use of fertilizers on cropland—may be a primary cause.

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