I called a professor who specializes in sanitation to discuss World Toilet Day. He said, "You're asking about my favorite thing — indoor plumbing." Yeah, Kellogg Schwab, a professor at Johns Hopkins ...
November 19 is World Toilet Day, created by the U.N. in 2013. At issue: Billions of people do not have access to a safe toilet. But how do you get... I called a professor who specializes in sanitation ...
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