NASA has said that human activity is causing a redistribution of freshwater across Earth. The is continuing as populations shift and for food increases. NASA said equatorial are drying, while areas and higher latitudes are getting . If this trend continues, many highly populated could struggle to find enough water in the . NASA spent 14 years studying the shifting of freshwater. It was part of a mission called GRACE, which is an for Gravity Recovery and Climate Experiment.
Jay Famiglietti, a co-author of the and NASA's Senior Water Scientist, said: "The shows that humans have really altered the global water landscape in a very profound . The human fingerprint is all over changing freshwater availability." He warned that: "We see it as a of climate change." Professor Famiglietti said that at 40 per cent of the 34 areas looked at in the research were drier than years ago because of human . One big reason was the excessive of groundwater for farming.