Deep in America’s northwest, there lies a supervolcano that, if erupted, has the potential to wipe out the majority of the United States. These supervolcanoes burst when a growing pressure of molten
<a href="http://www.ryot.org/supervolcano-yellowstone-volcano-will-it-erupt/765673" target="_blank">If This Supervolcano Erupts, Two-Thirds of America Will Be Screwed</a>