Joplin tornadoGetty This combination of two satellite images provided by GeoEye and MJ Harden shows, left, an area of Joplin, Mo. which includes a view of the Joplin High School, taken in August of 2009 and, right, the same area of Joplin is shown, including the high school, taken Tuesday May 24, 2011, two days after a devastating tornado tore through the city. Pictures: On the Ground in Joplin Pictures: Joplin
