Fossils reveal dinosaurs were flourishing in diverse ecosystems right up until the asteroid impact ended their reign. Their abrupt extinction reshaped Earth’s ecosystems and set the stage for mammals ...

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 ...

Massive volcanic eruptions on the Indian peninsula have long been proposed as an alternative cause for the demise of the dinosaurs. This phase of active volcanism took place in a period just before ...

Massive volcanic eruptions did not cause the extinction of dinosaurs, according to a new study. Volcanoes on the Indian peninsula have long been proposed as an alternative cause for the demise of the ...

The age of the dinosaurs ended 66 million years ago with the ultimate bad day, not a prolonged period of climate change wrought by volcanic activity, according to new research. The city-size asteroid ...

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 ...

Of Meteors and Buckyballs Aired February 23, 2001 - 7:40 a.m. ET . THIS IS A RUSH TRANSCRIPT. THIS COPY MAY NOT BE IN ITS FINAL FORM AND MAY BE UPDATED ...

There is probably no better example of the destructive power of space rocks upon our planet than the asteroid that killed the dinosaurs along with three-quarters of Earth's plant and animal species ...

A massive meteorite impact and extreme volcanic activity occurred around the same time that Earth's large dinosaurs went extinct. But, did the volcanic activity play a role in the mass extinction, or ...

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 ...