Climate Change

Richard A. Lovettfor National Geographic News
December 3, 2007
Over the past 25 years the tropics have expanded by as much as 300 miles (500 kilometers) north and south—evidence of climate change in action, a new study says.
This not only means that rain-drenched regions near the Equator are growing, experts say, but also that global warming may be pushing deserts poleward in places such as the U.S. Southwest, Mexico, Australia, South Africa, South America, and the Mediterranean.
http://news.nationalgeographic.com/news/2007/12/071203-expanding-tropics.html
(See a map of where global warming will hit the hardest.)