The Deposit of Ice at the South Pole of Mars is Measured

In an article from the New York Times from March of this year they were able to measure the amount of ice on the South Pole of Mars. The polar cap is a mixture of frozen carbon dioxide and water. The water accounts for 90% of the cap which was measured at 2.3 miles in depth and greater than the size of Texas. If you were to melt that down it would be enough to leave the surface of the planet 36 feet under water. An interesting point at the end of the article says that in the past Mars may have had even more water than what exists at the poles, and that scientists are interested in finding what happened to it.

http://www.nytimes.com/2007/03/16/science/16mars.html?n=Top%2fNews%2fScience%2fTopics%2fMars%20%28Planet%29