At least 10 people have been injured after being attacked by piranhas as they cooled off in a river, which regularly attracts ...

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 ...

A new study found that 75 streams in Alaska’s Brooks Range have turned orange due to thawing permafrost, which releases metals like iron, aluminum and cadmium that exceed U.S. Environmental Protection ...