In 4 days, a river that had flowed for millennia disappeared

The latest consequence of climate change is rivers “pirating” each other’s water. Nearly a year ago, scientists noticed that the water level of the Slims River in British Columbia was extremely low. So they hopped into a helicopter and flew upstream to investigate. What they found startled them: A second, more powerful river, the Kaskawulsh, had stolen the Slims River’s...

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