Saw this and thought it was pretty neat/scary.
http://www.businessinsider.com/yellowstone-volcano-supereruption-dangers-2014-9
http://www.businessinsider.com/yellowstone-volcano-supereruption-dangers-2014-9
The fear of a Yellowstone supereruption, which ultimately went viral, may have begun back in February when a seismometer called B944 began sending ********* data to a public viewer at the University of Utah's seismographic station, as George Black reports in The New Yorker.
Luckily for most of the U.S., the likelihood this eruption would happen is pretty low: about one in 100,000 any given year. If it did happen, it would be pretty devastating, though.