When I think of sand I think of dirt, and when I think of dirt, I don't think of
clean water. But sand is used to filter water in lots of places. This "coated sand" developed by Rice researchers? It's like a super filter.
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Source: http://feeds.gawker.com/~r/gizmodo/full/~3/OnQiE9nvJJQ/this-super-sand-makes-even-toxic-water-safe-to-drink
YAHOO XILINX WESTERN DIGITAL
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