Our planet’s first known mass extinction happened about 440 million years ago. Species diversity on Earth had been increasing over a period of roughly 30 million years, but that would come to a halt ...

Add Yahoo as a preferred source to see more of our stories on Google. Sharks might be the all time bullet-dodging champions. They’ve been around for about 450 million years, longer than trees, longer ...

Earth has a long and dramatic history, and one recurring theme is extinction. Did you know that over the last 500 million years, our planet experienced five major mass extinction events? These events ...

Asteroid impacts and volcanism have led to mass extinctions on our planet. Illustration by Emily Lankiewicz / NASA / Public Domain Life’s first major catastrophe crept across the planet with the ...

Learn how geological clues preserved in ancient oceans link repeated volcanic eruptions to Triassic marine extinctions. Mass extinctions are often imagined as sudden, planet-wide catastrophes caused ...

Sharks might be the all time bullet-dodging champions. They’ve been around for about 450 million years, longer than trees, longer than the rings of Saturn, and longer than most of the other life on ...