Not everyone has wisdom teeth, which usually develop fully at the back of the mouth between the ages of 18 and 24 years. Various factors can result in a lack of wisdom teeth, including genetics and ...

Teeth help animals bite and chew food. Meat-eating carnivores tend to have sharp teeth to sink into their prey, while herbivores tend to have flatter teeth to grind down their plant-based meals. Some ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...