Running out of water

According to NASA and the World Health Organization, 4 billion people will face water shortages by 2050. Many regions including China, Africa, India and the Arabian Peninsula will suffer. So will the U.S.

If Americans think water shortage is a problem that only affects less developed nations, they are in for a shock. The Colorado River -- once a mighty force through the Southwest -- no longer reaches the ocean. During the summer months, the Rio Grande disappears from its bed for nearly 200 miles, coming alive again only when it meets the Rio Conches. The water from these rivers keeps golf courses green and water fountains flowing, but their supply diminishes every year. And the effects will be felt sooner than we think. Southwestern states will face threatening shortages as early as 2025.

Above quoted from We're running out of water. As people wake up to global warming, it's time to consider the challenge of finding solutions to an impending water crisis.