![A Pakistani shopkeeper cleans toilets on display inside his shop in Lahore.](https://media.npr.org/assets/img/2021/06/30/gettyimages-1063542786_wide-dd2fe91377a58eb1e8d716517621f568a2551abc.jpg?s=600)
In Pipe Dreams, Chelsea Wald examines the health issues related to sanitation and looks at global efforts to manage human waste, including turning it into fuel and fertilizer.
(Image credit: ARIF ALI/AFP via Getty Images)
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