Global survey finds nature sanitizes millions of tons of human waste a year

Washington DC (UPI) Feb 19, 2021
The majority of human waste is processed by wastewater treatment infrastructure, but according to a new global survey, the sanitization services of natural ecosystems still play a significant role in protecting water supplies. When researchers in India and Britain analyzed sanitation services in 48 cities around the world, they found nature was responsible for cleaning 41.7 million tons

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