A great white shark is a masterwork of evolutionary engineering. These beautiful predators glide effortlessly through the ...

A new vibration-activated whitening powder uses electric toothbrush motion to brighten teeth while repairing enamel and influencing oral bacteria. Tooth stains are not always a brushing problem. Some ...

Leaf teeth, i.e. projections of the leaf margin, are common among angiosperms. These structures may differ in several aspects, e.g. in the presence or absence of an associated gland. Cucurbitoid teeth ...

Shark teeth are also disposable – they are constantly replaced throughout their lives, like a conveyor belt pushing a new ...

There's a longstanding debate simmering among biologists who study porcupines. There are 16 porcupine species in Central and South America, but only one in the United States and Canada. DNA evidence ...

Teeth can tell us a lot about the evolution of prehistoric humans, and our latest study of one of our species' close relatives may finally resolve a long-standing mystery. The genus Paranthropus is ...