Most people are familiar with the notion that "tree rings" — the concentric bands visible on a cross-section of a tree's trunk — serve as an indicator of a tree's age. Researchers at the University of ...

Because growing conditions vary from year to year, the rings are not uniform. The record of good (wide ring) and slow (narrow ...

CC0 Usage Conditions ApplyClick for more information. Archaeologists believe the sudden destruction of a pre-Columbian civilization found in southern Illinois occurred around 1150 AD. But to find the ...

The archive building will be the first new facility for the tree-ring lab, which has spent its entire 70-year history in offices and research space crammed underneath the west side of the football ...