Articles for category: Prehistoric Discoveries

The Inland Seas That Split North America in Two

The Inland Seas That Split North America in Two

The heart of North America once harbored vast prehistoric seas that divided the continent into separate landmasses. These ancient inland waterways, which existed during various geological periods, fundamentally shaped the continent we know today. From the Western Interior Seaway of the Cretaceous period to earlier Paleozoic seas, these massive bodies of water created unique ecosystems, ...

selective focus photography of bird

How Crocodiles, Birds, and Turtles Survived the Asteroid that Ended the Dinosaurs

When a massive asteroid struck Earth approximately 66 million years ago, it triggered catastrophic global changes that wiped out approximately 75% of all species, including the non-avian dinosaurs that had dominated terrestrial ecosystems for over 160 million years. Yet amid this devastation, certain animal groups managed to endure and eventually thrive in the post-impact world. ...

Science Says Early Americans Reached New Mexico Thousands of Years Earlier Than Once Believed

Science Says Early Americans Reached New Mexico Thousands of Years Earlier Than Once Believed

For most of the last century, school textbooks painted a simple picture: small bands of hunters trekked into North America around thirteen thousand years ago, chasing mammoths and leaving stone spearpoints in their wake. That story felt neat and complete, like a puzzle with every edge snapped into place. Then evidence from a quiet desert ...

A Second Impact Crater Has Been Discovered Beneath the Ice of Greenland That May Have Struck Earth Around the Same Time As the One That Killed the Dinosaurs

A Second Impact Crater Has Been Discovered Beneath the Ice of Greenland That May Have Struck Earth Around the Same Time As the One That Killed the Dinosaurs

Sixty-six million years ago, a space rock slammed into what is now Mexico and helped wipe out the dinosaurs. That story has become almost mythic at this point. But now imagine this: while that famous crater was forming, another huge object may have hit Earth near the very top of the globe, in what is ...

Scientists Have Now Identified the Exact Source Region in the Asteroid Belt Where the Dinosaur-Killing Rock Came From and the Implications Are Uncomfortable

Scientists Have Now Identified the Exact Source Region in the Asteroid Belt Where the Dinosaur-Killing Rock Came From and the Implications Are Uncomfortable

For decades, the rock that erased almost all dinosaurs was like a cosmic hit‑and‑run: we knew the crater, we knew the time, but we did not really know who sent the killer. Now, that picture is changing fast. By combining asteroid surveys, impact modeling, and geochemical sleuthing, researchers have zeroed in on a specific swath ...