AnsThis fall, I had three somewhat decrepit ash trees cut down. A friend with a chainsaw cut a cross section so I could count the rings. How far out do the countable rings go? Do I count the rings in ...

CC0 Usage Conditions ApplyClick for more information. The Smithsonian Environmental Research Center (SERC) is turning 60—and we’re celebrating with the help of trees! In this video, we count tree ...

We've all heard about counting the rings inside a tree trunk to discover its age. But there are other ways to determine a tree's age without chopping it down.