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Cactus Water Treatment Plants

A concept called “Grassroots Cactivism” would use the prickly pear as a renewable centerpiece of a water purifying system to subdue California's drought. The cactus could recycle wastewater without using additional energy, while producing a water-efficient crop that can feed local residents. http://gizmodo.com/a-not-so-fantastical-plan-to-save-california-from-droug-1733082246 #tech

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