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The USA's space agency NASA has confirmed that human activity is responsible a massive redistribution freshwater across Earth. It said the redistribution is continuing as populations shift and demand food increases. particular, equatorial regions were drying, while tropical areas and higher latitudes were gaining water supplies. NASA warned that if this trend continued, many highly populated urban areas could struggle to find sufficient water the future. NASA's claims are the result a 14-year study shifting locations and depleting resources freshwater. It was part a mission conducted 2002-2016 called GRACE, which is an acronym Gravity Recovery and Climate Experiment.

Researchers say that the shifting freshwater patterns are the result human activity. Jay Famiglietti, a co-author the research and the Senior Water Scientist NASA's Jet Propulsion Laboratory, said: "The study shows that humans have really drastically altered the global water landscape a very profound way." He warned that: "The human fingerprint is all changing freshwater availability. We see it large-scale overuse groundwater. We see it as a driver climate change." Professor Famiglietti said least 40 per cent of the 34 hot areas examined the research were drier than two decades ago because of human activity, especially excessive groundwater pumping farming.

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