The 1st Paleoproterozoic global glaciation (a Snowball Earth event) and the onset of the Great Oxidation Event occurred between ca. 2,460 and 2,426 Ma, ∼100 Ma earlier than previously estimated, new study concludes - also showing Snowball Earth periods had extreme impacts on the development of life.

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The 1st Paleoproterozoic global glaciation (a Snowball Earth event) and the onset of the Great Oxidation Event occurred between ca. 2,460 and 2,426 Ma, ∼100 Ma earlier than previously estimated, new study concludes - also showing Snowball Earth periods had extreme impacts on the development of life.