Alaska's Rivers Turn Orange as Thawing Permafrost Releases Toxic Metals

The phenomenon, visible from space, poses risks to wildlife, drinking water, and local fisheries.

Researchers identified over 75 streams in Alaska's Brooks Range affected by the discoloration.
Thawing permafrost is exposing minerals like iron, zinc, and copper, increasing water acidity.
The change in water chemistry is similar to acid mine drainage, despite no nearby mining activity.
The orange streams have led to declines in fish and macroinvertebrate populations.
Scientists warn the issue could worsen as climate change continues to warm the Arctic.