14-year-old-girl-who-developed-a-low-cost-water-purification-system

http://m.fastcoexist.com/?m=fastcoexist/node/1681073&url=http://www.fastcoexist.com/1681073/meet-the-14-year-old-girl-who-developed-a-low-cost-water-purification-system?utm_source=twitter&utm_source=twitter

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