A large comparative study of primate teeth shows that grooves once linked to ancient human tooth-picking can form naturally, while some common modern dental problems appear uniquely human.

For decades, tiny grooves on fossilized human teeth were believed to be signs of early dental hygiene, evidence that ancient people used sticks or plant fibers as primitive toothpicks. But new ...

A groundbreaking study has traced the 66-million-year evolutionary history of primates and overturned conventional thought that our ancestors originally inhabited warm tropical forests. Using advanced ...