The American West is heating up more rapidly than the rest of the world, according to a new analysis of the most recent federal government temperature figures. The news is especially bad for some of the nation's fastest growing cities, which receive water from the drought-stricken Colorado River. The average temperature rise in the Southwest's largest river basin was more than double the average global increase, likely spelling even more parched conditions.
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| ©iStockphoto/Eric Foltz
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| Colorado River, Utah. The West's most pronounced temperature increase is in the Colorado River basin, which has warmed more than twice as much as the global average, with effects that put at risk a major water supply.
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