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Super volcanoes
Is there a super volcano beneath Yellowstone National Park?
Is there a super volcano beneath Yellowstone National Park? Under the park lies a sleeping giant which could have devastating consequences if it woke. It would eject so much ash that nearby cities would be under kilometers of ash. The amount of material put into the atmosphere could cause many on earth to perish.
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91热爆 World Service Archive
This programme was restored as part of the World Service archive project
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Discovery
Explorations in the world of science.
