Abby Knipp (image) University of Illinois at Urbana-Champaign, News Bureau Share Print E-Mail Caption Researchers used a color-coded guide to coral bleaching to keep track of changes in coral health from 2012 to 2018. Here, Abby Knipp consults the guide. Credit Photo courtesy Abby Knipp Usage Restrictions Photo courtesy Abby Knipp Share Print E-Mail 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.