Earlier this year, Bill Gates posted a video of himself drinking water that was made from human feces. (It went viral, unsurprisingly.)
The water was processed by a machine that collects human waste and converts it into safe, reusable byproducts -- water, electricity and ash. This week, Gates said in a blog post that the "Omni Processor" machine is getting its first test run in Dakar, Senegal, with the aim of reducing disease and saving lives in the city.
Bill Gates' poop water machine gets a test run - Aug. 13, 2015
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