The laboratory and laser (IMAGE) University of Colorado at Boulder Caption A powerful green laser helps visualize the aerosol plumes from a toilet while it’s being flushed. Credit Patrick Campbell / University of Colorado Boulder Usage Restrictions Credit must be given. 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.