Brian Wilsey, Iowa State University (IMAGE) Iowa State University Caption Brian Wilsey, associate professor, in Iowa State University's Department of Ecology, Evolution and Organismal Biology, stands in Iowa's Loess Hills where a portion of the research was done. Credit Courtesy 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.