Decades-old oil drilling may still be impacting rivers and streams today, with researchers finding biodiversity declines tied to wells.

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 ...