In standard PowerPoint style, red and orange on the left denote regions of trouble.
River's End tells that a major tributary to the Amazon, the Negro River dropped to a depth of 46 feet, the lowest in history. NASA photos reveal drought in the Amazon adds that the area of healthy, green vegetation shrunk by an area three times the size of Texas. The drought of 2010 was four times the size of the last severe drought in 2005.
NASA scientists are concerned that the Amazon rainforest may be undergoing a change from trees to grasslands and savannahs. Large amounts of carbon would transfer from the rotting trees into the atmosphere.
Amazon Rainforest is Looking a Bit Brown and Wilted explains the elevated concern of scientists. The 2010 drought has broken, with the rains returning. But the forest and vegetation has not rebounded with green growth.