There are some important differences between horns and antlers.
The bizarre story of how dung beetles bring the next generation into the world.
Scientists are using bone histology to sort things out. They've already concluded that Stygimoloch, was a juvenile Pachycephalosaurus, not a new species.
If you've seen Jurassic Park, you might be familiar with the Stegosaurus. Learn about the stegosaur and his tail on this Moment of Science.