Ancient Peruvian engineering could help solve modern water shortages

Enlarge / Diversion canals channel water into earth-bottomed infiltration canals like this one, where water can begin to soak into the ground on its way to a pond or basin. (credit: Musuq Briceño, CONDESAN, 2012.)

Rain seldom falls on the desert lowlands of coastal Peru, so people in the area have always depended on the water that flows down from the Andes during the rainy season. But streams in this part of the world come and go quickly, so indigenous people built a system of canals and...

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