Rivers and streams in Alaska are changing color – from a clean, clear blue to a rusty orange – because of the toxic metals released by thawing permafrost, according to a new study.

An orange tributary of Alaska's Kugororuk River Josh Koch, U.S. Geological Survey Some of the water samples had a pH of 2.3, compared to an average pH of 8 for rivers, which means the impacted ...

Alaska's Rivers Are Turning Orange and No One Knows Why Published Dec 21, 2023 at 11:17 AM EST Updated Dec 21, 2023 at 12:02 PM EST ...

Rivers and streams in Alaska are changing color – from a clean, clear blue to a rusty orange – because of the toxic metals released by thawing permafrost, according to a new study.

Rivers and streams in Alaska are changing color – from a clean, clear blue to a rusty orange – because of the toxic metals released by thawing permafrost, according to a new study.

The rivers and streams in the range appeared to rust and became cloudy and orange over the past five to 10 years, according to the study published in the journal Communications: Earth & Environment.