Northern rivers turn orange and toxic due to thawing permafrost, study shows | Page 26 | Unpublished
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Publication Date: May 21, 2026 - 17:01

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Northern rivers turn orange and toxic due to thawing permafrost, study shows

May 21, 2026
Ancient bedrock exposed by disappearing permafrost is releasing toxic metals into Canada's northern rivers, a new study says, with some once-pristine subarctic streams now comparable to highly acidic, contaminated mining sites.

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