Unprecedented Continental Drying and Freshwater Losses Threaten Nearly 6 Billion People in 101 Countries

A July 2025 study in Science Advances, analyzing over two decades of NASA GRACE/GRACE-FO satellite data (2002–2024), revealed unprecedented terrestrial water storage (TWS) loss across continents, with drying areas expanding at twice the size of California annually, forming four Northern Hemisphere mega-drying regions: northern Canada, northern Russia, southwestern North America and Central America, and a vast region from North Africa through Europe, the Middle East, Central Asia, to northern China and Southeast Asia. This drying accelerated around 2014–2015 during strong El Niño events, with land-based freshwater losses now exceeding contributions from ice sheets to global sea-level rise; groundwater depletion accounts for 68% of drying in non-glaciated areas. Since 2002, 75% of the global population in 101 countries has experienced freshwater losses, exacerbating risks to agriculture, sanitation, food security, and geopolitical stability. A October 2025 World Bank report confirmed accelerating drying trends across Asia, Eurasia, North Africa, and North America, warning of severe economic and job impacts while advocating demand management, supply augmentation, and better water allocation. In 2024, water disasters killed 8,700 people, displaced 40 million, and caused over $550 billion in damages, with 2025's 'Flash Flood Summer' in the U.S. highlighting erratic water cycles per WMO and Global Water Monitor. Overpumping groundwater, especially in regions like California, continues to amplify drying amid rising temperatures.