Since time immemorial, humankind has wondered about its lineage: where it came from and how it got here. Modern science has ...

All-female species have been long thought of as evolutionary dead ends – but one fish has defied the odds to live without ...

Learn more about a fish-inspired robot and what it can teach us about how animals first left the water and began moving on ...

Scientists have peered inside the skull of a 380-million-year-old Antarctic fish that was closely related to the first animals to walk on land, revealing surprising clues about how life began its move ...

It's surely no surprise that my favorite Sesame Street character is Aloysius Snuffleupagus, a.k.a. Mr. Snuffleupagus, a.k.a.

The newly documented hairy ghost pipefish was named after this fuzzy "Sesame Street" character. See which one, why.

Researchers have developed a fish-like robot that shows how some species of modern fish are able to walk on land, and could help unravel how early vertebrates evolved similar abilities hundreds of ...

A tiny river fish, the Amazon molly, has survived 100,000 years without males, revealing alternative ways life maintains ...

Since passage of the Endangered Species Act 50 years ago, more than 1,700 plants, mammals, fish, insects and other species in the U.S. have been listed as threatened or endangered with extinction. Yet ...