Perhaps you’ve wandered through a forest or strolled into a neighborhood park and found tree trunks — and wondered if counting the rings on a trunk is truly a way to know the tree's age.

Those are years under your fingers. Every spring in much of the world, the cells under a tree’s bark wake up and start to divide. This forms a visible ring marking each year of the organism’s ...

Griffin, a University of Minnesota professor, is one of a growing number of scientists who study a tree’s environmental history through its rings — the white and dark brown grooves found on ...

If a tree's rings are studied in a lab but no one hears them, do they make noise in the climate movement? An associate professor of oboe at the University of Arizona wondered. It led her to team ...

Last summer, marked by deadly extreme heat and devastating wildfires, was the warmest in at least 2,000 years, according to new research, which analyzed weather data and tree rings to reconstruct ...