"I watched the piles of feces go up the conveyer belt and drop into a large bin. They made their way through the machine, getting boiled and treated. A few minutes later I took a long taste of the end result: a glass of delicious drinking water." Bill Gates reports on the Omniprocessor, a machine that converts sewer sludge into clean water and electricity.
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Tuesday, January 6, 2015
This ingenious machine turns feces into drinking water
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