http://www.ted.com Too much of the world lacks access to clean drinking water. Engineer Michael Pritchard did something about it ... ... <看更多>
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http://www.ted.com Too much of the world lacks access to clean drinking water. Engineer Michael Pritchard did something about it ... ... <看更多>
Drinkable Rivers. 1887 likes · 68 talking about this. Welcome to the Drinkable Rivers community ! Drinkable Rivers Foundation is an initiative by Li An... ... <看更多>