Animals

Barring further research, the discovery may help determine how cells first formed nuclei.

Part ghost, part plastic bag, all amazing.

Two embryos have been created from the eggs of the last living northern white rhinoceroses.

An ancient relative of spiders and scorpions had a tank-like body with bulging eyes, a spiky shield on its butt and a head like a multitool.

Cryodrakon boreas, a newly described species of giant pterosaur, was recently identified from fossils found in Canada.

Scary portrayals of great whites in pop culture might lead some people to wonder if the world would be better off with no sharks at all.

The striking lionfish is invading the Atlantic Ocean, eating its way through coral reef after coral reef.

Tibetan mastiffs are monstrous dogs that survive high in the mountains, and now we know that's because of a little extra shot of wolf in their genes.

The southern black-throated finch is thought to be extinct in New South Wales, and only an estimated 1,000 are left in the wild in Queensland.

This worm might be the earliest known commuter on Earth. (Too bad the journey killed it.)

In southeastern Colorado, male Oklahoma brown tarantulas will soon begin their annual migration to reach the prairies where female spiders live.

Fish swam for their lives when they encountered a forbidding, ancient "monster" penguin that would have towered over today's largest penguin.

A team of biologists from the United Kingdom thinks that they've decoded the mystery of all the gray squirrels running around the United States with black fur.