These results suggest the existence of a process recycling marine carbon into Earth's mantle, which could contribute to ...

Earth's magnetic field strength and atmospheric oxygen levels have oscillated in tandem for around 540 million years, ...

Researchers say they might have discovered the oldest rocks on Earth. The rocks in question are a belt of swirly, stripe-covered rocks found in the northeastern reaches of Canada. These rocks appear ...

In 2008 scientists reported that rocks in Canada were the world’s oldest. New data appear to confirm this contested claim ...

The gold standard for determining the age of ancient rocks is measuring the radioactive decay of isotopes of uranium into lead in minerals known as zircons. But not all rocks contain zircons, so ...

"Its occurrence is like finding a tropical seed in Arctic ice – indicating either an unexpected local environment or ...

A tiny grain from asteroid Ryugu has revealed djerfisherite, a mineral that normally forms in scorching, oxygen-poor settings ...

In an instant, the Chicxulub impact forever changed life on Earth—blasting out a huge crater, vaporizing and flinging up tons of rock, and devastating plant and animal life.

When the island of Santorini was rattled by thousands of small earthquakes earlier this year, many people were left mystified ...

Fossils are so common in Pennsylvania Bluestone that Glass often points out prehistoric plant fragments and ancient tide ...