Water demand is increasing three times faster than the world's population growth rate. By 2025, 30 percent of the world's population-a record 2.3 billion people in 50 countries-will be threatened by water scarcity. The gloomy arithmetic of water is alarming and cries out for solutions. The recently-concluded Third World Water Forum in Japan is helping catalyze actions for a water-secure world. Given that 70 percent of the world's freshwater is used...
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