Neal Iverson, Iowa State University (IMAGE) Iowa State University Caption Neal Iverson with his ring-shear device, a glacier-in-a-freezer, at Iowa State University. Credit Photo by Christopher Gannon/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.