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Volcanism is a much greater threat to civilization than meteors. In the past 1500 years, at least three eruptions have caused global crop failures: Tambora, Sa

• dredmorbius 7y ago
  Vulcanism has a ... generally ... bounded upper scale,[1] astronomical impactors do not, and demonstrably modest impactors have had devastating results, with numerous candidates existing. Fortunately they're sparsely distributed. ________________________________ Notes: 1. Volcanic traps caused by flood basalt eruptions being an extreme outlier upper bound, see the Siberian Traps, 500 million ya, as a notable example. https://en.wikipedia.org/wiki/Siberian_Traps https://en.wikipedia.org/wiki/Siberian_Traps There have been 18 identified, most 100s of millions to billions of years ago, though as recently as 10 mya. Yellowstone is among the younger (17 mya). The events may be associated with meteor impacts as well -- evidence is poorly preserved. https://en.wikipedia.org/wiki/Flood_basalt https://en.wikipedia.org/wiki/Flood_basalt