catastrophic events, environment Earthquakes and Tsunamis – Megaquake: Hour that Shook Japan Discovery Channel 2011 August 16, 2012 threatnewsradarguest Leave a comment The documentary below explains why Megaquakes (super earthquakes) are predicted to occur in the United States. Share this:FacebookTwitterTumblrLinkedInPinterestEmailPrintMorePocketRedditLike this:Like Loading...