The Juruena River is one of Brazil's most stunning water courses, once running through pristine landscapes and gracing satellite images with its blue water. Now, agriculture has moved heavily into the area, the rains wash mud into its erstwhile clear waters and numerous small dams are being built along it. A sad demise. The photo shows the upper reaches of the river, on the Parecis plateau.
Photo courtesy of Margi Moss/O Eco Amazonia