Ancient fossils show how much warming tropical oceans can handle before plankton collapse, offering clues about future ...

Why it's incredible: The valley holds hundreds of primitive whale skeletons, some of which have "feet." Whale Valley is a region of the Egyptian Sahara desert that is peppered with archaic whale ...

The evolutionary journey from primitive plesiadapiforms to early primates during the Paleocene and Eocene epochs represents a critical chapter in mammalian history. Fossil records from these periods ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. About 50 million ...

The oldest known fossil of a singing cicada reveals that these insects were making music during the Eocene epoch — long before humans existed. “The fossil has been in the collection of the Senckenberg ...

Around 45 million years ago, a 4.6 feet-tall (1.40 meters) flightless bird called Diatryma roamed the Geiseltal region in southern Saxony-Anhalt. An international team of researchers report on the ...