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 ...

Salt Creek in Death Valley, California. A new analysis reveals that rivers in arid landscapes are helping to soak up more carbon dioxide than previously thought. “Rivers are one of the most uncertain ...

CLIMATEWIRE | Atlantic salmon are known for making one of nature’s most remarkable journeys. Each year, hordes of them surge from the ocean into Canada’s rivers and streams, swimming back to their ...