Study Warns of Rapid Global Freshwater Loss Due to Climate Change and Overuse

Study Warns of Rapid Global Freshwater Loss Due to Climate Change and Overuse
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A new study published in Science Advances on July 25 reveals that Earth’s continents are undergoing unprecedented freshwater loss, with major implications for global water security and stability. The research, led by Arizona State University and based on over two decades of satellite data from NASA’s GRACE and GRACE-FO missions, found that 75% of the global population lives in countries losing freshwater since 2002, largely due to climate change, extreme droughts, and excessive groundwater extraction.

Researchers identified four major “mega-drying” regions — spanning North America, Northern Canada and Alaska, Northern Russia, and the Middle East–North Africa–Pan-Eurasia — with drying expanding at a rate twice the size of California each year. Groundwater depletion alone accounted for 68% of land water loss, contributing more to sea level rise than melting polar ice. The study highlights a critical tipping point around 2014–2015 when drying intensified, particularly across the Northern Hemisphere.

Scientists urge immediate global action, including sustainable groundwater policies, international cooperation, and long-term water management strategies, to address the escalating water crisis and its impact on agriculture, food security, and climate resilience. A World Bank report is expected to explore the findings further.