Climate Change Reducing Oxygen Levels in Rivers Worldwide
A new study published in Science Advances reveals that global warming is causing a steady decline in oxygen levels in rivers worldwide, threatening aquatic ecosystems. Researchers from the Chinese Academy of Sciences analyzed data from over 21,000 rivers since 1985, finding an average oxygen loss of 2.1%. This trend, driven primarily by rising water temperatures, could lead to the formation of 'dead zones' where fish and other aquatic life struggle to survive. Regions such as the Eastern United States, India, and tropical rivers like the Amazon are particularly vulnerable, with some areas projected to lose up to 10% of their oxygen by the end of the century. The study also highlights the role of nutrient pollution, urban runoff, and dam construction in exacerbating oxygen loss. 
