Global study of 48 cities finds nature sanitizes 41.7 million tons of human waste a year February 25, 2021 The first global-scale assessment of the role ecosystems play in providing sanitation finds that nature provides at least 18% of sanitation services in 48 cities worldwide, according to researchers in the United Kingdom and India. Read more about Global study of 48 cities finds nature sanitizes 41.7 million tons of human waste a year
