Soil Science for Biomass Production (IMAGE) Iowa State University Caption Robert Horton, a Charles F. Curtiss Distinguished Professor in Agriculture at Iowa State University, is part of an eight-year, $22.5 million research program supported by ConocoPhillips. Horton is one of 19 Iowa State researchers leading the 26 projects the energy company's research program has supported in its first year. Credit Photo by Bob Elbert/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.