Reinvent the Toilet

Four out of 10 people worldwide don’t have a safe way to poop. Find out why we need a toilet revolution. We need new ideas to help reduce disease and find new ways to turn crap into valuable stuff, like fuel, fertilizer, and fresh water. Bill & Melinda Gates Foundation

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Bill Gates: How I’m trying to change the world now

Bill Gates hopes to solve some of the world’s biggest problems using a new kind of philanthropy.

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