Sampling Thousand-Year-Old Wood (image) University of Arizona Caption Christopher Baisan of the University of Arizona's Laboratory of Tree-Ring Research examines a cross-section of wood he's just removed from a dead Douglas-fir (Pseudotsuga menziesii) in a canyon near Price, Utah. Analysis later showed that the tree had started life around A.D. 960, lived through the epic drought of the 1100s and died in about 1421. Credit David M. Meko, The University of Arizona Usage Restrictions Photo must be used only in connection with a story about the research described in this release. Please credit the photo to: David M. Meko, The University of Arizona. 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.