Earth looked much different not just millions, but even decades and centuries ago. Many animal species that once existed are ...

Previous research indicated that kangaroos weighing more than about 350 pounds would rupture their ankle tendons if they tried to hop. The largest of the Ice Age kangaroos, Procoptodon goliah, which ...

For centuries, massive teeth found along coastlines puzzled scientists and naturalists. Researchers later discovered these ...

Ever wonder how saber-toothed cats and other extinct creatures behaved? Well, a team of scientists unearthed ancient footprints that offer insight into how various prehistoric animals lived as far ...

Learn about Prototaxites, a bizarre group of prehistoric organisms that fall within an unknown lineage of extinct life.

Prototaxites are something of a prehistoric mystery. They were the first giant organisms on land, towering over ancient ...

Colossal Biosciences, a startup trying to bring the prehistoric mammoth back from extinction, said it has achieved a first step: the Woolly Mouse. Using DNA and genomics technologies, scientists have ...

The once-extinct dire wolf species, popularized in HBO's "Game of Thrones," has been brought back. But were Colossal Biosciences scientists behind the de-extinction so preoccupied with whether or not ...

Tens of thousands of years ago, the first wave of a worldwide tsunami now known as the “Sixth Extinction” swept across the ...