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One-Tenth of World's Crops Grown in Sewage

One-tenth of the world's irrigated crops--everything from lettuce and tomatoes to mangoes and coconuts--are watered by sewage. And much of that sewage is raw and untreated, gushing direct from sewer pipes into fields at the fringes of the developing world's great megacities, reveals the first global survey of the hidden practice of waste-water irrigation. And, however much consumers may squirm, farmers like it that way. Because the stinking, lumpy and pathogen-rich sewage is rich in...