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Water filter from clay and coffee grounds PDF Print E-mail
Friday, 15 April 2005 00:55
An Australian scientist has developed a new water filtration system, an invention that potentially will benefit millions of people in developing countries and would enable anyone in the world to drink water safely. The ABC ran a story and the directions for making it, along with photos are here and a video. I particularly liked it because it showed an innovative use of available materials to create a low-tech cheap solution to a pervasive problem.
 

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