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FILE - In this Thursday, July 12, 2018 file photo, an algae bloom appears on the Caloosahatchee River at the W.P. Franklin Lock and Dam in Alva, Fla. A study released on Wednesday, Jan. 6, 2021, shows America’s rivers are changing color, mostly because of what people are doing. (AP Photo/Lynne Sladky)

One-third of America's rivers have changed color since 1984

Jan. 7, 2021 1:19 PM EST

America’s rivers are changing color — and people are behind many of the shifts, a new study said. One-third of the tens of thousands of mile-long (two kilometer-long) river segments in the United States have noticeably shifted color in satellite images since 1984. That includes 11,629 miles (18,715...