“Like a milky orange juice”: Alaskan rivers turning orange due to climate change, study finds

In Alaska, dozens of the state’s rivers are turning orange and climate change seems to be to blame.

According to a recent study published in the journal Communications Earth & Environment, iron and other toxic metals are leaching into the water supply for 75 streams in Alaska’s Brooks Range. The scientists used remote sensing to determine that these substances began entering the river systems within the last 10 years, corresponding with a period when climate change caused increased warming and snowfall....

Originally posted on salon.com

Earth’s salt cycle is swinging out of balance, posing yet another “existential threat,” study finds

It is not pleasant to imagine that human activity is making the planet uninhabitable, but we typically think of this in terms of greenhouse gases, rising sea levels or acidifying the oceans. We aren’t typically concerned with how salty things are.

Yet a recent study published in the journal Nature Reviews Earth & Environment identifies a wealth of industrial activities from construction and agriculture to water and road treatment as making the planet Earth too salty — literally....

Originally posted on salon.com

There’s a river in Pennsylvania whose endpoint is unknown — and it’s not the only “lost” river

On maps, rivers are typically depicted as blue lines — with a starting point, usually near a mountain where rainwater collects; and an endpoint, usually in a lake or ocean. With the advent of satellite imagery, tracing the path of a river is typically a simple exercise; no more hacking through brush and scaling mountains to map geography....

Originally posted on salon.com