Across Arctic Alaska, once-clear rivers are shifting to shades of pumpkin, rust and even blood red, a startling visual proof that thawing ground is spilling buried minerals into the water. What looks ...

Alaska's rivers and streams are becoming toxic as a strange "milky orange" color stains their waters, a new study has found The research from the National Park Service, U.S. Geological Survey, the ...

An aerial view of the rust-colored Kutuk River in Gates of the Arctic National Park in Alaska. Thawing permafrost is exposing minerals to weathering, increasing the acidity of the water, which ...

Researchers at the University of California, Davis, reported that dozens of Alaska’s most remote waterways are turning from a crystal clear blue color into a cloudy orange hue, and a thawing ...