Rolf Halden (IMAGE) Arizona State University Caption Rolf Halden is the director of the Biodesign Center for Environmental Health Engineering. Credit The Biodesign Institute at Arizona State 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.