A wave of new research using decades of NASA satellite data has uncovered a dramatic and unprecedented loss of freshwater from Earth's continents. Scientists warn that over the past 20 years, climate change, overpumping of groundwater, and worsening droughts have caused rapid drying of land and shrinking aquifers. This loss is so severe that drying land now contributes more to rising sea levels than melting glaciers. Four major 'mega-drying' regions have been identified, threatening water security for billions. Experts say urgent action is needed to manage water resources and prevent a global crisis.
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