Those two little lines aren't just aesthetic. They are instrumental in helping us communicate, mourn, and even stay alive.

From fights with creationists to dinosaurs that might not exist

In a remote bay in Indonesia, American researchers have partnered with local fishermen to uncover the mysteries of world’s biggest fish.

For decades, scientists have tested animal intelligence by seeing if they can recognize themselves in mirrors. But how do you revamp that test for a species that relies more on smell than sight?

Wolves dramatically outperform pooches at a task that requires them to work together.

It's all about their efficient muscles.

People didn’t know where yellow-spotted goannas laid their eggs, until one team started digging.

When flames erupt on the Iberian Peninsula, reptiles don’t sweat a thing. The mites that suck their blood are far less thrilled.

Ancient DNA reveals unexpected twists in the history of this deadly disease.