Earth has a flair for dramatic resets, though it usually takes millions of years to deliver them. Over its long history, life has been knocked back by volcanic eruptions, climate swings, changing seas ...

The Earth has lived through 5 mass extinctions of animals and plants. The last one - 66 million years ago - took out the dinosaurs. That extinction is believed to have been caused by a giant asteroid ...

Add Yahoo as a preferred source to see more of our stories on Google. (Anton Petrus/Moment/Getty Images) Life on Earth, beginning with simple microorganisms that evolved and diversified into the ...

A quarter of a billion years ago, long before dinosaurs or mammals evolved, the predator Dinogorgon, whose skull is shown ...

Life on Earth took a long evolutionary journey that eventually created us, the purportedly intelligent species that dominates the planet. But there was no grand plan or design, only happenstance, ...

Hundreds of species have gone extinct in recent centuries, but losses are few among larger classification levels, meaning we are not witnessing a mass extinction just yet, according to a study ...

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