Teeth are a rare exception. Once formed, dental tissues do not remodel, allowing them to permanently record disruptions to growth and long-term dietary habits.

"Human children grow at a uniquely slow pace by comparison with other mammals. When and where did this schedule evolve? Have technological advances, farming and cities had any effect upon it?

A novel study on the natural coordination of tooth development in time and space, led by Dr. Han-Sung Jung at the Yonsei University College of Dentistry, Korea, has discovered that "lingual" cells on ...