What you need to know about the most powerful earthquakes recorded.
원문출처 : http://edition.cnn.com/video/data/2.0/video/bestoftv/2014/04/03/orig-5-most-powerful-earthquakes-on-record-npr.cnn.html?eref=edition
원문출처 : http://edition.cnn.com/video/data/2.0/video/bestoftv/2014/04/03/orig-5-most-powerful-earthquakes-on-record-npr.cnn.html?eref=edition