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 [email protected]. Why do people have two sets of teeth? – Ivy D., ...

From baby teeth to ‘conveyor belt’ molars, here’s why humans—and other mammals –grow and replace their teeth in such ...

A new birth cohort study reveals that a mother’s stress-related hormones in late pregnancy, especially cortisol, may quietly influence when her baby’s first teeth appear, uncovering a surprising link ...