NASA study shows water shortages could worsen without action

Wet land areas on Earth are becoming wetter, and dry areas drier, according to a NASA-led study the agency described as a first of its kind. Scientists drew on 14 years of satellite observations combined with data on human activities to track freshwater trends in 34 regions worldwide. Hydrologist Jay Famiglietti said, "What we are witnessing is major hydrologic change." Related: Famiglietti, senior water scientist at NASA's Jet Propulsion Laboratory,

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