Hidden Treasures (IMAGE) Earth Institute at Columbia University Caption In the Terminal Warehouse basement, tree-ring scientists and building staff inspect original joists that were removed from a section of the building during a renovation. Some had more than 150 visible annual rings. Caroline Leland, who co-led study of the building, is at center, back to the camera. Credit Mukund Palat Rao Usage Restrictions Credit must be given. License Original content 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.