Cynthia Schofer and Eric Thurm, TUM (image) Technical University of Munich (TUM) Share Print E-Mail Caption Cynthia Schofer and Eric Thurm, doctoral candidates at the Chair for Forest Growth and Yield, take a growth ring sample from an experimental plot tree. Credit Photo: L. Steinacker / TUM Usage Restrictions Free for use for coverage on this study with the copyright mentioned. 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.