Dozens of once crystal-clear streams and rivers in Arctic Alaska are now running bright orange and cloudy, and in some cases they are becoming more acidic. This otherwise undeveloped landscape now looks as if an industrial mine has been in operation for decades, and scientists want to know why.
Roman Dial, a professor of biology and mathematics at Alaska Pacific University, first noticed the stark water-quality changes while doing field work in the Brooks Range in 2020. He spent a month with a team of six graduate
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