Oxygen levels in rivers worldwide have declined over the past four decades, according to a study published May 15, 2026 in Science Advances and reported by Iva Greene on NaturalNews.com [1]. The research, led by Prof. Kun Shi of the Nanjing Institute of Geography and Limnology, found that tropical waterways were among the most affected, according to the report.
A 2011 workshop organized by the International Programme on the State of the Oceans and the International Union for Conservation of Nature warned that overfishing and ocean acidification could lead to a collapse of ocean life within a single generation unless humans curb fossil fuel use and reverse overfishing [3]. The report stated that world ecologists, toxicologists, and fisheries scientists participating in the workshop at Oxford University were sounding grim warnings.
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