Earth's largest mass extinction occurred about 252 million years ago, wiping out the majority of marine and terrestrial life, ...

For decades, biologists have warned that humanity is precipitating a sixth mass extinction. By some estimates, species are ...

A sleepy koala may seem worlds apart from a giant Ice Age predator, but scientists have uncovered the first molecular ...

According to the US Fish & Wildlife Service, feral cats are the top threat to wildlife and the most invasive mammal species in the United States. Estimates suggest there are 50 to 80 million feral ...

The enormous subalpine woolly rat, seemingly lost for decades, was recently rediscovered high in the mountains of Papua New ...

Madagascar, an island nation east of continental Africa, is the only place on Earth where lemurs exist. There are more than ...

These two haunting wildlife portraits reveal the quiet violence of human expansion and, more importantly, the fragile lives ...

Thought to be extinct in the wild, the Spix Macaw currently exists in captivity with their numbers in the dismally low 60 to ...

Expert marine mammal researchers spotted up to 10 of the porpoises during a recent survey in the Upper Gulf of California.

Shoebill birds can reach a height of five feet, but the prehistoric-looking creatures generally aren't taller than people.

Paleontologists have discovered fossil remains belonging to an enormous ‘toothed’ bird that lived for a period of about 60 million years after dinosaurs.

Researchers discovered a prehistoric ecosystem filled with giant marine reptiles, revealing an unparalleled level of food web complexity. Predators that dominated the oceans 130 million years ago were ...