• Supervolcano eruptions are extremely rare in Earth's history.
  • A supervolcano must erupt more than 1,000 cubic km (240 cubic miles) of material.
  • No one knows when the next super eruption will be.
  • Ash could block sunlight so much that photosynthesis would be reduced and global temperatures would plummet.
  • Volcanic eruptions could have contributed to some of the mass extinctions in our planet’s history.
  • The composition of the eruption is felsic or highly felic.
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