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Resurrecting 1500-Year-Old Canals Could Fix Peru's Water Shortages 

Lima is one of the world’s largest desert cities, so when it rains it—just kidding, it pretty much never rains. Which leaves Peru’s capital city especially vulnerable to water shortages, and the surprising solution might be reviving a system of ancient canals that date back to even before the Incas. » 4/10/15 6:00am 4/10/15 6:00am