About 56 million years ago, Europe and North America began pulling apart to form what became the ever-expanding North Atlantic Ocean. Vast amounts of molten rock from Earth's mantle reached the ocean ...

The curious minds at What If explore what might have happened if Pangea never broke apart, imagining catastrophic effects on climate, evolution, and ecosystems.

Researchers have long believed that a sudden, massive deluge filled a dry, salt-filled Mediterranean 5 million years ago.

A massive upheaval in the Saturnian system could have also led to the moon Hyperion.

In the oceans and on land, scientists are discovering rare, transitional organisms that bridge the gap between Earth’s simplest cells and today’s complex ones.

This discovery didn’t come from a jungle expedition - it came from smuggled scales seized in Hong Kong. Genetic testing showed the material didn’t match any known pangolin species, but instead a ...

Scientists propose that eukaryotes formed when an Asgard archaeon entered into a close partnership with an alphaproteobacterium. Over time, the two organisms became permanently linked. The ...