See also:

• Science: Earth Sciences: Geology: Volcanoes  (123)
• Society: Issues: Warfare and Conflict: Weapons: Nuclear: Nuclear Winter  (2)

Horizon - Supervolcanoes - It is little known that lying underneath one of America's areas of outstanding natural beauty - Yellowstone Park - is one of the largest supervolcanoes in the world. The impact of a Yellowstone eruption is terrifying to comprehend - huge areas of the USA would be destroyed, the US economy would probably collapse, and thousands might die.

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