at the end of the article: > So much water is now being used that ground water levels in Helmand are estimated to be falling by 3m a year. The fear is that pre

at the end of the article: > So much water is now being used that ground water levels in Helmand are estimated to be falling by 3m a year. The fear is that pretty soon the water will simply run out. "Maybe this boom will not last longer than 10 years," says Orzala Nemat, who runs the Afghanistan Research and Evaluation Unit, the country's biggest think tank.