Dinosaurs weren't in decline when an asteroid smashed into Earth and wiped them out, scientists say. Instead, the idea that dinosaur diversity was declining before the asteroid struck 66 million years ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Sixty-six million ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Where that asteroid or comet came from, however, is a ...

Imagine a world where dinosaurs and humans coexist. A new study is asking this question, as there may just be proof that had an asteroid not hit Earth and caused one of the great extinctions, ...

The extinction of the dinosaurs has been a hotly debated topic for decades, and whether it was an asteroid, a volcanic eruption or even poisonous plant species. But researchers have found hard ...

Scientists have long debated whether dinosaurs were in decline before an asteroid smacked the Earth 66 million years ago, causing mass extinction. New research suggests dinosaur populations were still ...

Scientists have long debated whether dinosaurs were in decline before an asteroid smacked the Earth 66 million years ago, causing mass extinction. New research suggests dinosaur populations were still ...

Scientists have long debated whether dinosaurs were in decline before an asteroid smacked the Earth 66 million years ago, causing mass extinction. New research suggests dinosaur populations were still ...

Dinosaurs appear to have been thriving before a giant asteroid hit the Earth 66 million years ago, paleontologists working in New Mexico said Thursday in the journal Science. Experts have long debated ...

Geological clues suggest that the space rock that created Chicxulub crater was a carbonaceous chondrite meteorite. Around 66 million years ago, an asteroid slammed into the Yucatan Peninsula and ...