A wave of new research using decades of NASA satellite data has revealed that Earth's continents are losing freshwater at an unprecedented rate. Over the past 20 years, climate change, overpumping of groundwater, and worsening droughts have drastically depleted underground water reserves. This rapid loss is not only threatening drinking water supplies for billions but is also contributing more to sea level rise than melting glaciers. Scientists have identified four 'mega-drying' regions, all in the Northern Hemisphere, where the crisis is most severe. Experts warn that without urgent action, water scarcity could become one of the most pressing global challenges of our time.
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