Alaska's pristine rivers are turning a rusty orange even when seen from space, likely because of melting permafrost: study
An orange tributary of the Kugororuk River in Alaska.
Joshua Koch, US Geological Survey
- Scientists say that dozens of waterways in Alaska are "rusting," or turning into a dirty orange.
- They said permafrost thawing in the summer is now exposing minerals to the surface, releasing metals and acid.
- Some brooks and streams are turning so acidic that they're comparable to lemon or orange juice.
At least 75 of Alaska's brooks and streams have been turning a dirty orange likely due to thawing permafrost...
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