Artist's rendering of the Chicxulub asteroid entering Earth's atmosphere 66 million years ago, triggering events that caused a mass extermination. Roger Harris/Science Photo library via Getty Images ...

The exact moment when Earth’s most catastrophic mass extinction ended the dinosaurs’ reign 65 million years ago has remained ...

The Cretaceous-Paleogene mass extinction, occurring approximately 66 million years ago, represents one of the most dramatic biotic crises in Earth’s history. It is marked by the abrupt disappearance ...

Two new studies suggest that, contrary to longstanding belief, dinosaurs were not on the decline before the Chicxulub asteroid impact. Plus, a giant infrastructure project aims to block invasive carp ...

In the cliffsides and dried-up arroyos of Northwestern New Mexico, deposits of sandstone and mudstone contain traces of a ...

Rocks formed immediately before and after non-avian dinosaurs went extinct are strikingly different, and now, tens of millions of years later, scientists think they’ve identified the culprit—and it ...

A large asteroid (~12 km in diameter) hit Earth 66 million years ago, likely causing the end-Cretaceous mass extinction. Credit: Southwest Research Institute/Don Davis A large asteroid (~12 km in ...

About 66 million years ago, an asteroid slammed into the planet, wiping out all non-avian dinosaurs and about 70% of all marine species. For a few days in mid-February, headlines around the world ...