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Michael Pritchard's water filter turns filthy water drinkable


Michael Pritchard's water filter turns filthy water drinkable
Michael Pritchard's water filter turns filthy water drinkable
Duration: 9:31

Too much of the world lacks access to clean drinking water. Engineer Michael Pritchard did something about it -- inventing the portable Lifesaver filter, which can make the most revolting water drinkable in seconds. An amazing demo from TEDGlobal 2009.