Twins are pretty rare, accounting for just 3% of births in the U.S. these days. But new research shows that for primates 60 ...

We often see the results of evolution, but not the process directly. Now, scientists have been treated to front row seats of ...

However, 60 million years ago, having twins was the norm among primates, which changed everything anthropologists understood ...

Evolution is often depicted as a steady forward march from simple to complex forms. But new research shows that certain ferns ...

Saber-tooth fangs acted like an “evolutionary ratchet,” ensuring the hunting prowess of animals but limiting their ...

The outer ear is unique to mammals, but its evolutionary origin has remained a mystery. According to a study published in ...

The tests help explain evolution among saber-toothed predators ... But they could have also led to those animals’ demise. While that degree of specialization may have helped the big cats successfully ...

An international team of scientists has uncovered a fascinating piece of the evolutionary puzzle: how the ventral nerve cord, ...