Biochar Illustration (IMAGE) Colorado State University Caption The study analyzed the effects of a thin carbon coating on composted biochar. Credit Mihaela Albu, Austrian Cooperative Research, Graz; Wolfgang Gerber/Nikolas Hagemann, University of Tübingen 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.