Consulting the Tree Rings (image) University of Oregon Share Print E-Mail Caption A wedge is about to be removed from a fire-scarred western red cedar tree on Hecate Island off the coast of British Columbia. Tree rings are used to reconstruct drought years and fire events. Credit Photo by Kira Hoffman Usage Restrictions Use photo credit 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.