Reuters: Vast mines in Peru and Chile that supply the world with crucial metals have started to pump water from the Pacific Ocean high into the Andes Mountains because of chronic water shortages exacerbated by climate change. Tapping seawater allows miners to avoid relying on unpredictable rivers, which may run dry as glaciers melt, and avert clashes with farmers who draw their water from creeks in poor mountain villages. "Water always generates conflicts between mines and …