Why Are Alaska’s Rivers Turning Orange?

Photo caption: Tukpahlearik Creek in northwestern Alaska’s Brooks Range runs bright orange where permafrost is thawing. Photo credit: Taylor Roades. Article by Alec Luhn. Scientific American – January 1, 2024.

Streams in Alaska are turning orange with iron and sulfuric acid. Scientists are trying to figure out why

It was a cloudy July afternoon in Alaska’s Kobuk Valley National Park, part of the biggest stretch of protected wilderness in the U.S. We were 95 kilometers (60 miles) from the nearest village and 400 kilometers from the road system. Nature doesn’t get any more unspoiled. But […]

Click here to view original web page at www.scientificamerican.com