Singer in aerosol chamber (IMAGE) Colorado State University Caption Mary Hughes, a performer with the NY Metropolitan Opera, was a participant in the CSU aerosol emissions study. Credit Ron Bend/Colorado 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.