Scientists discovered some of the oldest bony fish fossils in China. The fossils explain the early history of animals with backbones.

DNA is revealing that many animals once thought to be a single species may actually be several hidden ones. But research on ...

A major new study finds the pace of biological discovery is accelerating, not slowing down, and estimates Earth may harbor tens of millions or even billions of species still unknown to science. For ...

Dramatic landscapes and rich biodiversity characterize Alaska’s unique environment. Alaska is the only US state with ...

Researchers discovered that a 215-million-year-old reptile started life on four legs and switched to two as an adult.

Herbert Run flows through Catonsville’s Spring Grove Hospital campus, accumulating a cocktail of bacteria and pollutants from ...

Two marsupial species presumed to be extinct have “risen from the dead” after being rediscovered on the island of New Guinea, which lies north of Australia. One is the pygmy long-fingered ...

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

One such molecule is known as bradykinin. It is shared by all vertebrates, including mammals, reptiles, birds and fish. But it is also present in the venoms of some wasps and the toxic skin secretions ...

Urgent action must be taken to ensure that imported red fire ants do not establish themselves on the island, to prevent ...