Dendrochronology

Dendrochronology is like tree rings, but for science. Scientists use dendrochronology to learn about past climates. By counting the tree rings in different trees, scientists can tell which years had wetter or dryer weather, which helps them understand how past environments change over time. Trees grow wider rings during wet seasons and narrower rings when it is dry. By looking at the rings in a tree, scientists can tell how much rain or snow a certain location got in different years. This helps them understand how the environment of an area changes over time.