How Green is Corn? (image) University of Illinois at Urbana-Champaign Share Print E-Mail Caption Harvesting corn leaves and stems for use in biofuel production reduces carbon in the soil, the researchers found. The more material harvested, the less carbon in the soil. Credit Photo by Don Hamerman Usage Restrictions Photo may be used only with stories about the research described in the news release. Please credit: Photo by Don Hamerman. Share Print E-Mail 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.