A section of Nome Creek in the White Mountains National Recreation Area, seen in June, shows how historic placer mining, which dredged much of the waterway, molded the bank into a scalloped rock wall.

Dozens of Alaska’s most remote streams and rivers are turning from a crystal clear blue into a cloudy orange, and the staining could be the result of minerals exposed by thawing permafrost, new ...

During these late winter days, researchers who are studying the rusty discoloration of northern Alaska streams are prepping for summer field trips. Jon O’Donnell of the National Park Service is one of ...

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 finding ...

If it keeps getting warmer, they get much better at catching salmon’ — Erik Schoen, University of Alaska Fairbanks ...