Noguera & McMahon (IMAGE) University of Wisconsin-Madison Caption UW-Madison civil and environmental engineering professors Daniel Noguera, left, and Katherine McMahon study how anammox bacteria may improve conventional wastewater treatment methods. Credit Stephanie Precourt/UW-Madison 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.