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Why Alaska Rivers Are Turning an Eerie Orange
The cause is just as concerning as the color.
As permafrost melts, long-stored acids and metals—including iron—are released into rivers, where they interact with oxygen, turning the water from clear blue to a milky orange, according to new research in the journal Communications: Earth and Environment. Ken Hill / National Park ServiceThe rusting of Alaska rivers is an unintended, unforeseen consequence of climate change, says coauthor and environmental toxicologist Brett Poulin at the University of California, Davis. Ken Hill / National Park ServiceWater and sustainability researcher Santiago Montserrat at the Advanced Mining Technology Center at the University of Chile was not involved in the study but has observed an increase in ARD in the Andes due to shrinking glaciers.
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