Berkeley Lab researcher Chelsea Preble (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Berkeley Lab researcher Chelsea Preble helped conduct experiments on the movement of indoor air contaminants. Here she is controlling the aerosol emissions device in a room configured like classroom. Credit Berkeley Lab 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.