Yellowstone has seen a lot of quake activity lately, btw.: http://www.usnews.com/blogs/capital-commerce/2009/01/05/yellowstone-supervolcano-earthquakes-scientis

Yellowstone has seen a lot of quake activity lately, btw.: http://www.usnews.com/blogs/capital-commerce/2009/01/05/yellowstone-supervolcano-earthquakes-scientists-react.html http://www.usnews.com/blogs/capital-commerce/2009/01/05/yell...