Culprit for Mass Extinction 445 Million Years Ago? Global Warming - The New York Timeshttps://www.nytimes.com/2020/06/10/science/global-warming-ordovician-extinction.html
Articles in the New York TimesCarbon dioxideGlaciers, icebergs and sea iceLate Ordovician mass extinction (LOME)Mercury (chemical element)MolybdenumOrdovician periodOxygenUraniumVolcanic eruptions

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Molybdenum
Chemical elements