Massive burps of carbon dioxide triggered widespread ocean anoxia 300 million years ago, sediment cores suggest

PHYSorg
Jun 23, 2025, 3:00 pm184 ptsTrendingTop
New research from the University of California, Davis, the Chinese Academy of Sciences and Texas A&M University reveals that massive emissions, or burps, of carbon dioxide from natural Earth systems led to significant decreases in ocean oxygen concentrations some 300 million years ago.

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