Inside the Broken Bone of the World's Biggest T. Rex!

This giant Tyrannosaurus rex named Scotty broke its rib 66 million years ago, and its body grew a super-cool network of tiny new blood vessels to heal the ouchie. Scientists used special invisible light beams to peer inside the fossil without breaking it, showing us exactly how dinosaurs healed just like we do. Imagine carrying around a secret inside your bones for millions of years!