SENSORS 2 (IMAGE) Rice University Caption Pucklike devices designed by Rice University scientists and engineers contain multitudes of programmable bacteria that can detect contaminants and report their presence in real time. The bacteria release an electrical signal when triggered. Credit Brandon Martin/Rice University Usage Restrictions None License Original 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.