Water scarcity and depletion

Sandra Postel

With key crop-producing regions and numerous metropolitan areas showing signs of water scarcity and depletion, global food supplies and economic health are in jeopardy. Moreover, global warming from the buildup of greenhouse gases could greatly complicate regional water problems by shifting the patterns of rainfall and runoff that agriculture and urban water systems are geared to. 

Without question, water development has been a key to raising living standards, and it needs to be extended to the one fifth of humanity who have largely missed out on its benefits.