VideoWhy birds are the only surviving dinosaurs Birds evolved directly from Velociraptors and are the only true dinosaurs that still exist. Here's how they survived to fill almost every niche today Video
LifeT. rex took 40 years to become fully grown An analysis of growth rings in the leg bones of 17 Tyrannosaurus rex individuals reveals that the dinosaurs matured much more slowly than previously thought, and adds to the evidence that they weren't all one species News