WATER IS the one thing none of us can live without. But it now seems the well may be running dry, and closer to home than expected.

Water woes in developing countries are no secret. But the Associated Press recently noted the U.S. government's prediction that 36 states, including Pennsylvania, will have a water shortage within five years. Even now, a drought in Georgia has led to severe cutbacks, governmental prayers for rain and an ongoing "water war" with Florida and Alabama.

Norfolk just enacted water-conservation rules, and a town in Tennessee has almost completely run out, limiting service to three hours a day. The western U.S. faces large-scale groundwater depletion. Lake Mead, which supplies Las Vegas and parts of California, is 100 feet below normal and draining rapidly. And in San Diego, there's talk of an "impending Armageddon" of water as the San Joaquin River Delta gets lower.

All in all, AP says, "Across America, the picture is critically clear - the nation's freshwater supplies can no longer quench its thirst." Obviously, if we're not yet in a nationwide water crisis, we will be in a disturbingly short time. And access to fresh water is a life-and-death issue.

The good news is that scientists have found an area of water inefficiency, where a basic change in our habits would free up huge quantities of water. Read More...