NASA satellite images show the shocking speed at which the land is sinking beneath major U.S. cities, including Baltimore, New York and Charleston.
"Subsidence is a pernicious, highly localized, and often overlooked problem in comparison to global sea level rise, but it's a major factor that explains why water levels are rising in many parts of the eastern U.S.," Leonard Ohenhen, a geophysicist at Virginia Tech and one of the authors of the study, told NASA Earth Observatory.
Sinking land can also lead to salt water intruding into farmland, crops and fresh water supplies, as well as impacting wildlife habitats like marshlands, according to NASA Earth Observatory.
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