A study of fossil bones shows Tyrannosaurus rex kept growing until around age 40, challenging long-held ideas about dinosaur ...

For decades, scientists have been counting annual growth rings—similar to tree rings—inside fossilized leg bones of ...

Growth plates are areas of cartilage found at the ends of long bones. They play a role in the bone growth of children and teens. An injury to a growth plate can affect the development of a bone. While ...