Our planet’s first known mass extinction happened about 440 million years ago. Species diversity on Earth had been increasing ...

Everyone knows that dinosaurs are extinct, and most people have some idea about how it might have occurred. But the exact ...

Sure, we all know about the asteroid impact that is thought to have wiped out the dinosaurs, but did you know that the Earth ...

About 252 million years ago, 80 to 90 percent of life on Earth was wiped out. In the Turpan-Hami Basin, life persisted and bounced back faster.

Deaths of nearby massive stars may have played a significant role in triggering at least two mass extinction events in ...

The Jurassic Period is one of the three prehistoric geological periods of the Mesozoic Era. It spans from 145 million to 201 million years ago. This period was preceded by the Triassic Period and ...

After Earth's worst mass extinction, surviving ocean animals spread worldwide. Stanford's model shows why this happened.

A group of scientists and NASA got together and with the help of supercomputers came up with a date for total and complete ...

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

The dinosaurs were not in decline before the asteroid hit, a new study finds. Instead, poor fossilization conditions and ...

Violent supernovas may have caused two of Earth’s largest mass extinctions that have never been completely explained, according to a theory put forward in new research.During the final stages of ...