Biodigester at UC Davis (IMAGE) University of California - Davis Caption Anaerobic digesters, such as this one at UC Davis, have positive effects when it comes to converting agricultural, livestock, food and water waste, found a UC Davis study. Credit Gregory Urquiaga, UC Davis Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.