Seniors are living longer than ever before. Advances in oral health care prevention and disease treatment mean that many seniors will retain more of their natural teeth. When we age, teeth undergo ...

Fossils can tell scientists what extinct animals looked like and what their environment was like. But what about their diet?

The secret to their longevity could help conservationists better protect species today threatened by extinction.

In its 4.5 billion year history, Earth has undergone five mass extinctions and we are potentially in a sixth era of mass death. Today’s crocodylians are the surviving members of a lineage called ...

Most people think of crocodilians as living fossils—stubbornly unchanged, prehistoric relics that have ruled the world's ...