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 ...

(CNN) — The sensitive interior of human teeth might have originated from a seemingly unlikely place: sensory tissue in fish that were swimming in Earth’s oceans 465 million years ago. While our teeth ...

Show the zoologist Bill Schutt what your mouth looks like, and he’ll tell you who you are. By Sam Kean Sam Kean is the author of six books on science history, including “The Icepick Surgeon” and “The ...