Peruvian farmers harnessed this weather pattern's floods on a large scale 2,000 years ago
A modern-day field growing in water and sediment left in the aftermath of an El Niño event near Pampa de Mocan (1). Views of an ancient field and canals (2 and 3). / ARI CARAMANICA (1 and 3); LUIS JAIME CASTILLO BUTTERS (2)