Our Earth’s atmosphere was not always the safe haven it is today. New research, informed by ancient ocean fossils, provides a glimpse into a time when our planet’s atmosphere was inhospitable and ...

Fossilized teeth show that two different kinds of ancient human ancestors coexisted more than 2 million years ago. One of them may be an unknown species.

Fossilized teeth show that two different kinds of ancient human ancestors coexisted more than 2 million years ago. One of them may be an unknown species.

Fossils separated for nearly a century reunited to reveal Sphenodraco scandentis, an arboreal rhynchocephalian, an ancient reptile, from Late Jurassic period.

The most commonly used methods for freeing fossils are risky. Acid, for instance, dissolves limestone, but it also destroys many types of fossils.

(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 ...

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