The bottom photo, taken in July, shows a beautiful blow river flowing through a lush landscape. The original post had been viewed more than 4.3 million times. Since mid-September, the Rio Negro ...

A small river in the suburbs of Buenos Aires suddenly changed color, turning bright red, alarming local residents. The Sarandí Creek, which flows through the Avellaneda municipality, just 9.6 km ...

River in Argentina turns an unusual shade of red Residents in a Buenos Aires suburb became alarmed after a river became bright red. Authorities are investigating the source of the contamination.

a major body of water between Argentina and Uruguay. Rivers in the area have a history of contamination problems. The Matanza-Riachuelo River basin, for example, has been called one of the most ...