The fossils offer a rare glimpse into a cataclysmic event that brought a sudden end to the greatest explosion of life in our planet's history.

Globally, human animals have trespassed into the homes of countless nonhuman animals (animals), and our planet—land, water, and air—has become severely fractured by these reckless intrusions. As a ...

Koalas with the bodies of lions. Elephants the size of your dog. Gigantic, 8-foot-tall sloths. These aren’t creatures found in science fiction: They walked our planet a million years ago, during the ...

Life on earth has gone through a number of extinction periods, but somehow many species have managed to survive and thrive to this day. These animals have been on our planet for millions of years and ...