A plant that lived 47 million years ago in what is now Utah is like nothing that lives on planet Earth today. The discovery of new fossils reveals that a species first found in 1969 is not a member of ...

No matter what science fiction says, it’s hard to imagine humans will ever be able to stomp around a planet in another planetary system looking for life — the distances, time, and energy involved are ...

NASA sent the science community into a frenzy with the release of images of rocks on Mars, which led to one suggesting they ...