A new study reveals that ocean acidification, triggered by a massive carbon dioxide surge from volcanic activity during the ...

NASA announced on Wednesday (July 23) that the space rock is likely to pass close to our planet on Monday (July 28).

Since the first sharks emerged in the world’s oceans nearly half a billion years ago, the world has gone through five major ...

Learn about two major asteroid impacts from 3.5 million years ago that may not have had lasting environmental effects.

The constant deluge of bad news about rising global temperatures and their impacts can make it feel like the world is ending. Is it?

Perhaps the most well-known extinction is the Cretaceous-Paleogene (K-Pg) extinction event, which took place 66 million years ago. We all know about it because it was the event that wiped out the ...

The end-Cretaceous extinction—the massive extinction event widely attributed to an asteroid impact that wiped out all non-avian dinosaurs approximately 66 million years ago—had a profound ...

To find answers, a team of researchers studied North America’s fossil record, focusing on the 18 million years before the mass extinction at the end of the Cretaceous period.

The Triassic-Jurassic Extinction Event: ... It was caused by a giant asteroid, possibly 9 to 14.5 kilometers wide, that slammed into what is now the Yucatán Peninsula of Mexico.

Dinosaurs weren't in decline when an asteroid smashed into Earth and wiped them out, scientists say. Instead, the idea that dinosaur diversity was declining before the asteroid struck 66 million ...

By Katie Hunt, CNN (CNN) — It’s a long-standing debate in paleontology: Were dinosaurs thriving when an asteroid hit Earth one fateful spring day 66 ...