There are a couple of things to consider before scientists survey trees. First, they must find a site where humans haven’t affected the area with logging or other research. Then they pick a group of ...

We've all heard about counting the rings inside a tree trunk to discover its age. But there are other ways to determine a ...

The world's oldest trees were growing when the Great Pyramid of Giza was being built and were already thousands of years old when Julius Caesar came to power. To determine a tree's age, scientists ...

Q: This 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 ...