A few days ago my daughter had her wisdom teeth removed. This is a teenage rite of passage, at least for most of us. My friend, Laurie, says that she is more highly evolved because she didn’t have ...

(The Conversation) – 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 ...