Evaporating water supplies

As the global population reaches 7 billion, ecological distortions are becoming widespread. Among the changes are a drop in fresh water supply in more than two dozen of the largest African nations and a net loss of forest in South America and Australia. Nations with stable or declining populations, such as the United States, have seen a rise in acreage and density of temperate forests. Several developing nations with biologically diverse tropical forests have lost ground. Read related article.

A look at dwindling resources around the world.
Sources: World Bank; U.N. Food and Agriculture Organization, U.N. Global Forest Resources Assessment, 2010. Graphic: Dan Keating and Bill Webster/The Washington Post. Published on October 23, 2011, 8:55 p.m.
 
Read what others are saying