The long-dormant Yellowstone super-volcano in the American West has a different history than previously thought. A new study finds "no evidence of heat coming directly up from the Earth's core to power the surface volcano at Yellowstone."

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The long-dormant Yellowstone super-volcano in the American West has a different history than previously thought. A new study finds "no evidence of heat coming directly up from the Earth's core to power the surface volcano at Yellowstone."