An international examination involving over 21,000 river systems revealed that close to 80% of the planet's rivers are experiencing a drop in oxygen levels due to climate change, agricultural runoff, and sewage contamination. Prominent rivers in the US, such as the Mississippi and Ohio, are exhibiting significant reductions in oxygen, jeopardizing drinking water safety and aquatic habitats. Researchers caution that this emergency could impact US water infrastructure within ten years if prompt measures are not taken.
