Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. Why do people have two sets of teeth? – Ivy D., ...

It was already known that Komodo dragon teeth are similar to those of many carnivorous dinosaurs, in that they're laterally flat, curved back, and serrated along the edges. An international team of ...