Earth's largest mass extinction event, colloquially known as the Great Dying, was the result of a short-lived ice age initiated by the onset of the Siberian Traps volcanism that released sulfur-rich volatiles into the stratosphere, study finds.

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Earth's largest mass extinction event, colloquially known as the Great Dying, was the result of a short-lived ice age initiated by the onset of the Siberian Traps volcanism that released sulfur-rich volatiles into the stratosphere, study finds.