Art Restoration (image) American Chemical Society Caption Art conservationists cleaned the two angels on the left with traditional restoration methods. They cleaned the one on the right using an advanced laser technique, which produced better results. Credit Salvatore Siano Usage Restrictions None 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.