Well, tree-ring dating, or dendrochronology, can be this precise, and even more so. Dendrochronologists showed that an ancient wooden road uncovered in southwestern England not only was built in ...

It actually experiences a growth spurt—with new cells growing between the previous year's tree ring and the tree's bark. The cells that grow during this initial period are large. As the season ...

Because tree rings tend to grow wider in warmer, wetter years and thinner in drier, colder years, they act as a record of ...