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Yellowstone supervolcano eruption 'would affect the world'

Duration: 02:22

Dr James Farrell discusses the Yellowstone National Park supervolcano with Sarah Montague

Available since: Wed 11 Dec 2013

This clip is from

Today 11/12/2013

Including Yesterday in Parliament, Sports Desk and Thought for the Day.

First broadcast: 11 Dec 2013

Image for 11/12/2013 Not currently available

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