Giant freshwater crayfish, longer and bulkier than today's species, roamed New Zealand 20 million years ago. They would have ...

The creatures cruised the world’s oceans with features we often associate with marine mammals, such as coats of blubber and ...

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 ...