Some wasps and frogs evolved similar chemicals that cause pain in predators, even though the species are not closely related.

With'Hoopers' in theaters, we ranked the five best Pixar movies ever based on Rotten Tomatoes score, including classics like ...

Researchers have devised a new tool for discerning between naturally occurring viral outbreaks and those resulting from lab ...

Scientists discover webbed feet in land animals, challenging common assumptions. This trait, initially for swimming, also ...

Researchers believe these creatures started out on four legs and later began walking on two legs as they grew.

In Lake Malawi, hundreds of species of cichlid fish have evolved with astonishing speed, offering scientists a rare opportunity to study how biodiversity arises.

A Purdue University contraceptive vaccine seeks to address animal overpopulation by markedly reducing fertility in feral ...

Evolutionary theory has revolutionized the way we understand humans – yet more than a century after Darwin's ideas reshaped biology, the female form of our species remains largely a mystery.

Some animals are born with horns while others shed their antlers each year. But what's the evolutionary purpose?

Courtesy of Zhu Youan. Chinese scientists have discovered fossils of bony fish dating back about 436 million years, providing key evidence that hel ...

Scientists are trying to understand how complex life emerged on Earth about 2 billion years ago. Our microbial ancestors could be the key.

New 3D reconstructions of a key sensory organ in ctenophores reveal an unexpected structural and functional complexity. The ...