A $350 toilet powered by worms may be the ingenious future of sanitation that Bill Gates has been dreaming about

Bill Gates poo
Bill Gates held up a beaker of human feces at the reinvented toilet expo in Beijing on November 6, 2018 to prove a point: unsanitary conditions are dangerous for our health. Bill and Melinda Gates Foundation

More than 4,000 such “Tiger Toilets” have been installed to date across India, in homes of people who were previously defecating in the open. The worm toilets smell a lot better than a pit latrine, and don’t breed mosquitoes either.

Here’s how a $350 toilet powered by worms could change the world and save lives. MORE

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