which ended approximately 66 million years ago (after a meteor strike, many scientists believe, eliminated the majority of life on Earth). For most of the Cretaceous, Canada’s prairie provinces ...

A day on Earth was just 23.5 hours long, 70 million years ago. Researchers discovered this by studying the growth rings of ancient mollusk fossils. The findings could tell us more about or planet ...

A new animation showcasing Earth’s evolution has surfaced in a new paper published in the journal Science. The animation was created using a new model, which highlights over 100 million years of ...

The moon may have received a volcanic facelift, making it more than 100 million years older ... began forming about 4.6 billion years ago, or about 250 million years earlier.

Our solar system's journey around the center of the Milky Way takes it through varying galactic environments, and one may have had a lasting impact on Earth's climate, according to a new study.

The Early Cretaceous Epoch lasted from 145 million years ago to 100.5 million years ago and the Late Cretaceous ... had moved almost into the positions they are in today. Back then Earth was a lot ...

Dinosaurs are the extinct relatives of birds that roamed the lands and seas of ancient Earth. They first appeared around 240 million to 230 million years ago in the Triassic Period, and went ...

A new study reveals that Earth's biomes changed dramatically in the wake of mass volcanic eruptions 252 million years ago.

The agency announced on Thursday that asteroid 99942 Apophis, which was identified in 2004, will not pose a risk to Earth for at least 100 years ... than 4 billion years ago and originated ...

The mantle transition zone (MTZ), which occurs 410–670 kilometers below Earth's surface ... water has remained in the MTZ for 30–100 million years; thus, the researchers suggest, a long ...