They are the part that preserves the clearest record of diet and behavior through their wear patterns and chemical composition.

In archaeological contexts where bones have dissolved and soft tissues are long gone, teeth remain.

The Sulawesi discovery is, in a sense, a triumph of dental archaeology.

The three molars of Maros-LBB-1a are almost all that remains of a person who lived 16,000 to 25,000 years ago.

But those three molars — the hardest things that person ever possessed — preserved enough information to reveal one of their most intimate habits.

The groove worn into each molar by years of nut-sucking.