A Stanford-led study has provided the strongest evidence yet that warming oceans and declining oxygen levels caused Earth's largest mass extinction around 252 million years ago. The research explains why some marine animals survived while others nearly disappeared, offering fresh insight into how modern climate change could affect ocean ecosystems.

Through experiments comparing living representatives of animal groups that dominated Paleozoic oceans with those that thrive today, Stanford scientists have directly linked the…

A Stanford-led study has provided the strongest evidence yet that warming oceans and declining oxygen levels caused Earth's largest mass extinction around 252 million years ago.…