'River piracy' is robbing communities of their water sources.
could cause serious harm to Alaska's already fragile ecosystems, and drastically alter human water use.
The first modern case of river piracy happened in 2016, when the Kaskawulsh glacier — Canada's largest — melted so rapidly that the river it fed reshaped itselfreports, river piracy will only get worse. "Glaciers by and large around the world are retreating," University of Calgary geoscientist Dan Shugar told. "That enhanced retreat that we’re seeing now, we know unequivocally, that is due to climate change."
Now, the National Park Service geologists behind the new paper predict that Alaska's Alsek river, fed by the rapidly-vanishing Grand Plateau glacier, is going to spend the next few decades drifting miles off course, leaving behind the local communities that rely on it.. "It's going to involve a combination of people who use that area changing their expectations and their plans and their patterns of behavior to accommodate the river not being there.
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