{"data":{"id":1995,"lang":"en","title":"Stanford Study Confirms Why Earth's Greatest Mass Extinction Wiped Out Some Species but Spared Others","summary":"A Stanford-led study confirms Earth's largest mass extinction 252 million years ago selected victims based on their metabolic tolerance for heat and low oxygen.","category":"science","category_label":"Science","published_at":"2026-07-12T22:01:41Z","updated_at":"2026-07-12T22:01:41Z","url":"https://techtools.cz/tools/news/article/1995-stanford-study-confirms-why-earth-s-greatest-mass-extinction-wiped-out-some","api_url":"https://techtools.cz/news-api/v1/articles/1995?lang=en","markdown_url":"https://techtools.cz/news-api/v1/articles/1995.md?lang=en","image_url":"https://mediasvc.eurekalert.org/Api/v1/Multimedia/1e887d67-eb52-4b26-a3f4-01d43e0ee285/Rendition/low-res/Content/Public","word_count":187,"reading_time_minutes":1,"sources":[{"url":"https://www.eurekalert.org/news-releases/1135567","domain":"eurekalert.org"},{"url":"https://www.sciencedaily.com/releases/2026/07/260711010122.htm","domain":"sciencedaily.com"}],"translation":{"lang":"cs","id":2068,"title":"Studie Stanfordovy univerzity potvrdila, proč největší vymírání v dějinách Země některé druhy vyhladilo a jiné ušetřilo","url":"https://techtools.cz/tools/news/clanek/2068-studie-stanfordovy-univerzity-potvrdila-proc-nejvetsi-vymirani-v-dejinach-zeme","api_url":"https://techtools.cz/news-api/v1/articles/2068?lang=cs"},"content":"Stanford researchers led by Jose Andres Marquez, working under senior author Erik Anders Sperling, have confirmed why the Permian-Triassic extinction 252 million years ago killed off ancient seafloor life like brachiopods and sea lilies while sparing faster-metabolizing mollusks, fish and echinoderms. The study, published July 6 in Proceedings of the National Academy of Sciences, is the first to factor in the biological metabolism of the affected animal groups.\n\nThe \"Great Dying\" wiped out 96% of marine species and 70% of land animals after a surge of volcanic activity pushed ocean temperatures up 8-12°C over thousands of years and drained oxygen from the water. Slow-metabolizing filter feeders like brachiopods could not cope with the heat and low oxygen; only about 400 brachiopod species remain today, compared with 10,000-15,000 modern bivalve species descended from the extinction's survivors.\n\nSperling said the biggest mass extinction of all time started from a world very similar to today's. Current warming projections of 1.5-4°C by 2100 are far below the Great Dying's 8-12°C increase, but the study suggests even smaller shifts could strain marine life with similar metabolic vulnerabilities."}}