80% of the people in the world live close to degraded watercourses, according to a U.S. study conducted jointly by researchers from the Universities of New York and Michigan. The researchers have crossed various “stressors” such as pollution, drought, and climate change, and have come to the inevitable conclusion: most rivers are threatened, as are the people who live near them and the ecosystems that depend on them. So for Charles Vörösmarty and Peter McIntyre, the two people in charge of the study, there are few places where biodiversity is preserved – and the countries in the North are no different.
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