A wave of new research using decades of NASA satellite data has revealed that Earth's continents are losing freshwater at an unprecedented rate. The combined effects of climate change, overuse of groundwater, and worsening droughts are rapidly depleting underground aquifers and surface water supplies. This loss is so severe that drying land now contributes more to sea level rise than melting glaciers. Four major 'mega-drying' regions have been identified, threatening water security for billions and raising the risk of a global water crisis. Experts warn that urgent action is needed to manage water resources and adapt to a drier future.
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