Testing Tornadoes (IMAGE) Iowa State University Caption Iowa State University's Tornado/Microburst Simulator runs over a 3-D model of a two-mile by three-mile section of rough Alabama countryside. Credit Photo courtesy of Christopher Karstens/Iowa State University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.