The Rio Putumayo, an Amazon tributary flowing through Colombian forests before entering Ecuador, is sacred to the Siona and Inga indigenous communities with spiritual and cultural significance.

Dust from the Sahara Desert, once a massive lake, travels across the Atlantic Ocean. This dust, rich in potassium and iron from dead diatoms, fertilizes the Amazon rainforest. The Amazon River ...

You’ve heard it’s the Nile. You’ve heard it’s the Amazon. The truth depends on where you start—and how you measure.

Rio Ruidoso River at Hollywood, just east of Ruidoso, New Mexico, rose 20 feet in just 30 minutes around 4 p.m. Tuesday. A flash flood emergency is in effect.

A car crash was reported Thursday morning in Sacramento County east of Rio Vista, California Highway Patrol logs show. CHP was dispatched around 4:24 a.m. to River Road just north of Highway 12.