Super Volcano

Despite growing evidence of geothermal activity under Yellowstone, it look geologists a long time to realize there was a volcano beneath this wildlife preserve, and an even longer time to find the crater. Ariel photographs revealed this as 45 miles wide, encompassing the whole of Yellowstone! What will happen, in human terms, when it erupts?Greg Breining explores the shocking answers to this question and others in this scientific and accessible look at this enormous disaster brewing beneath one of the world's best-known parks. Historically, Yellowstone has erupted every 600,000 years, but has not done so for 630,000 years, meaning it is 30,000 years overdue - any day now, in geological terms! Yellowstone is one of the worlds five 'SuperVolcanoes', and when it erupts the entire world will be affected dramatically and for years! Starting with a scenario of what will happen when Yellowstone blows, this fascinating study describes how volcanoes function and a timeline of famous volcanic eruptions throughout history.