As permafrost thaws, some headwaters in Canada’s North turn orange and toxic: study

Ancient bedrock exposed by disappearing permafrost is releasing toxic metals into Canada's northern rivers, a new study says, with once-pristine subarctic streams now comparable in some cases to highly acidic, contaminated mining sites. The post As permafrost thaws, some headwaters in Canada’s North turn orange and toxic: study appeared first on CHEK .

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