Lords of the Rings: Oldest Tree Species on Earth

Trees are among the oldest living organisms on the planet. Some individual trees have lived for several thousand years, and connected groves of trees can sometimes live for tens of thousands of years. Living that long requires a combination of steady climate, solitude, luck and of course, genetics. Some tree species consistently outlive the others. Based on tree rings (which form at the rate of one per year), these are the longest-lived tree species.