One Third of U.S. Rivers Changed Their Color, Three Decades of Satellite Images Show
This aerial view shows the Colorado River, south of Las Vegas, on February 6, 2020. (Photo by DANIEL SLIM/AFP via Getty Images) At a Glance Viewing the color of an entire river from space can reveal a lot about water quality, a new study says.The team found that 56% of their observations were dominantly yellow. Another 38% were dominantly green. No man ever steps into the same river twice, according to an ancient Greek philosopher. Nearly 2,500 years later, satellites...