There are roughly 2.5 million known species on the planet, but scientists estimate that's only a fraction of the biodiversity on Earth. A new study shows we're finding new species like never before.

Human beings have been at the center of ecological change on Earth for thousands of years. But as history shows, no species ...

Imagine an animal that seems to be assembled from various other creatures: it has large eyes, the round body of a rabbit, a rodent’s pointed snout, tiny pig-like hooves, and even fangs like those of a ...

For the past 65 million years, mammals have thrived across nearly every corner of Earth. In this time span, they have shaped ecosystems with their adaptability, diverse behaviors, and interactions ...

An artist’s impression depicts Kryoryctes at Dinosaur Cove in Australia. New research supports the hypothesis that Kryoryctes is a common ancestor of both the platypus and echidna. - Peter Schouten ...

According to most experts, the first mammal was Morganucodon, a small, shrew-like rodent that appeared during the Jurassic Period, approximately 200 million years ago. It weighed a few ounces and ...

A study published in Science of large cetaceans has unveiled remarkable findings about their potential for extreme longevity and the significant implications this has for their conservation. North ...

Had enough junk food? After a week of, well, Shark Week, a cheeky tabloid take on nature documentaries, it’s time for the real thing. A return to “Planet Earth,” if you will. David Attenborough ...

(CNN) — The story of two of the strangest animals on the planet just got a little stranger, thanks to clues revealed by a lone fossil specimen that scientists now say represents a long-extinct ...