Water filter from clay and coffee grounds
April 15, 2005
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.
I particularly liked it because it showed an innovative use of available materials to create a low-tech cheap solution to a pervasive problem.
Posted by mitra at April 15, 2005 8:55 AM
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