Not all fish play by the same reproductive rules. Evolutionary biology reveals how deception became a successful mating ...

An echidna in Australia is digging into a termite mound for food. Echidnas are rare mammals that lay eggs instead of giving birth. Their sharp spines protect them while they search for insects.

The bright colors of butterfly wings, the sweet aromas of flowers, and the euphonious melodies of songbirds all evolved as ...

Seventy million years ago, a feathered, flightless dinosaur known as an oviraptor squatted over a carefully arranged ring of ...