Monday, May 08, 2006

Students invent natural way to purify polluted water

The three teenagers got the idea from a documentary about a Japanese fish farmer who tossed oyster shells into a pond and found it cleared the dirty water. They began experimenting with scallop shells immersed in dirty dish water. The water cleared in 24 hours. Their research has already won prizes at three science fairs.

read more | digg story

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