In the first and only reconstruction of ocean pH ever carried out, new research from the University of St Andrews and the ...

The molten rock was hot enough to melt the surrounding rocks and release massive amounts of carbon dioxide into Earth's ...

Although the fifth mass extinction wiped out three-quarters of all species on Earth, each species-specific ecosystem survived. "It's a really interesting and slightly disquieting find.

Close to 66 million years ago, during spring in the Northern Hemisphere, a 6-mile-wide chunk of space rock slammed into our planet and set off the world’s fifth mass extinction.

The fifth mass extinction event, the Cretaceous-Paleogene (K-Pg) Extinction, transpired about 65 million years ago, famously causing the extinction of the dinosaurs.

In a new study published Thursday in the journal Science, researchers pieced together the chemical identity of the asteroid that fueled the planet’s fifth mass extinction event.

The Last Extinction: The Real Science Behind the Death of the Dinosaurs Gerta Keller. Diversion, $32 (320p) ISBN 979-8-895-15046-7 ...

At least five times, a biological catastrophe has engulfed Earth killing off the vast majority of species. As scientists say we’re in a sixth mass extinction, what can we learn from the past?

When: 359 million to 380 million years ago Why: While the term mass extinction may suggest instant global catastrophe, these events can take millions of years. The End-Devonian, for example, consisted ...

Paleontologist Ken Lacovara never expected to find critical fossil data in a New Jersey suburb—let alone info about the asteroid that killed the dinosaurs. His dig site is now a fossil park and ...

A study reveals the chemical makeup of the Chicxulub asteroid that collided with Earth and resulted in the extinction of nearly all dinosaurs 66 million years ago.