Below the picturesque geysers and rainbow-tinted hot springs of Yellowstone National Park lurks one of the most destructive volcanoes on Earth. The gargantuan Yellowstone hotspot (also known as the Yellowstone supervolcano) has erupted at least 10 times over the past 16 million years, permanently altering the geography of North America, periodically warping Earth's climate and throwing flakes of airborne ash to every corner of the world.
Now, the discovery of two ancient supereruptions — including the single largest in the hotspot's history — reveals an unexpected trend: The Yellowstone hotspot's activity may finally be waning.
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