190,000 Plants and a Storm Tank: the Environmental Revolution that Turns the River Huerva Into the Green Lung of Zaragoza

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The Huerva River, more than a mere tributary of the Ebro, has historically been the "secret soul" of Zaragoza. Born in the Sierra de Cucalón, in Teruel, the Huerva covers 128 kilometers. Its waters saw Romans, Visigoths and Muslims pass through; the Romans used it to irrigate and the Arabs built ditches and mills. However, the urban expansion of the 20th century drastically transformed its destination in the capital. In a decision considered tod…