Video: Jon Stewart on the water crisis
July 17, 2009, 11:08 a.m.
Jon Stewart interviews the author of 'Unquenchable: America's Water Crisis and What to Do About It'.
As Las Vegas spreads into the desert, water gets even more scarce
June 24, 2009, 2:08 p.m. by S.A. Rogers
NASA photos reveal 25 years of explosive growth, but it comes at a price.