Rhodopseudomonas palustris (IMAGE) Washington University in St. Louis Caption A Washington University team showed how a phototrophic microbe called Rhodopseudomonas palustris takes up electrons from conductive substances like metal oxides or rust to reduce carbon dioxide. Credit Image courtesy Bose laboratory, Washington University Usage Restrictions no restrictions 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.