We can learn a lot from studying the rings inside trees. The science of tree-ring analysis is called dendrochronology, and examining these markings can provide information about the tree’s age, whether it had been through any fires, or if it had endured any insect outbreaks. A tree’s rings can also give significant insight into what kind of climate conditions the tree has lived through, and thus how the earth’s climate has changed over time [1]. Scientists have recently uncovered an ancient tree that lived during a time in Earth’s history when the magnetic field almost completely reversed [2].
