Researchers found a direct link between global dispersion of nickel-rich aerosols, ocean chemistry changes and the end-Permian mass extinction event that took place 251 million years ago.
from Latest Science News -- ScienceDaily https://www.sciencedaily.com/releases/2021/06/210621094611.htm
from Latest Science News -- ScienceDaily https://www.sciencedaily.com/releases/2021/06/210621094611.htm
New geochemical study confirms cause of end-Permian mass extinction event
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June 21, 2021
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