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 main drivers are climate change, overuse of groundwater, and worsening droughts, which together have caused massive declines in underground water reserves. 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, all in the Northern Hemisphere, threatening water security for billions. Experts warn that if current trends continue, water scarcity will become a critical global crisis impacting food security, economies, and daily life.
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