A pediatric dentist and an anthropologist explain how baby teeth and adult teeth help humans chomp their food over a long ...

Contrary to popular belief, human canines are not for tearing and ripping meat. Instead, our ancestors used them to fight male rivals for mating rights. Over time, human species evolved smaller and ...

Two warm-blooded mammal species have triumphed in the fast-paced environment of New York City: human beings and rats. Robert Sullivan was fascinated with how eager many people are to save whales or ...

An extinct primitive marine vertebrate had the sharpest dental structures ever known -- with tips just one-twentieth of the width of a human hair, but able to apply pressures that could compete easily ...