The world is getting thirstier. Five ways we can keep from going dry

Hao TongqianXinhua/Eyevine/Redux

A six-month drought, China's worst in 50 years, has devastated crops and drinking water supplies.

Record droughts have parched the earth's crust from Somalia to Texas this year. The effects on the world's drinking-water supply have been enormous. The level of China's Yangtze River, the third largest in the world, sank so low this spring that about 400,000 people along its shores were stuck without a local drinking-water source until the government opened the gates of its massive Three Gorges dam to help counteract the crisis. In East Africa, some 10 million people have been punished by the region's worst drought in 60 years. And in Texas, where wildfires scorched 4 million acres (1.6 million hectares)...

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