Scientists have found that ancient horsetail plants change water chemistry in surprising ways, offering new clues about Earth ...

Imagine Earth at a time when it was almost unrecognizable—a landscape that was barren and with barely breathable air. That is what Earth looked like about 1.75 billion years ago. But scientists now ...

Wadisuchus kassabi, an ancient crocodile from Egypt, shows crocodiles lived in the sea, offering insight into reptile ...

Learn more about Wadisuchus kassabi, the crocodile’s ancient cousin that thrived in prehistoric oceans and rewrites this ...

Archaeologists uncovered teeth from an ancient human ancestor in Ethiopia's Afar Region. - Amy Rector/Virginia Commonwealth University Ancient, fossilized teeth, uncovered during a decades-long ...

When the remains of prehistoric creatures were discovered in Europe and the United States, it opened up a vociferous debate on the nature of time and the purpose of science. A lithograph illustrating ...

What can fossil records teach scientists about ancient ecosystems and marine environments? This is what a recent study published in the Proceedings of the National Academy of Sciences hopes to address ...

It’s hard to picture now, but long before the Sahara became a sea of sand, it was an actual sea—a shallow, tropical lagoon ...

(CNN) — Ancient, fossilized teeth, uncovered during a decades-long archaeology project in northeastern Ethiopia, indicate that two different kinds of hominins, or human ancestors, lived in the same ...