Eggs laid by dinosaurs have provided paleontologists with a new way to tell prehistoric time. By looking to radioactive ...

Unlike the site in Utah, the Mongolian site has no datable volcanic deposits. As a result, the eggshell tests there yielded ...

Despite seeming like a relatively stable place, the Earth's surface has changed dramatically over the past 4.6 billion years. Mountains have been built and eroded, continents and oceans have moved ...

An international team of geologists and paleontologists is pioneering a groundbreaking methodology to reliably determine the ...

Learn how the fossils of ancient organisms help scientists navigate deep time — and uncover Earth’s hidden history.

Paleontologists have debated the age of fossils ... the dating techniques was based on the direction of Earth's magnetic field at the time, as recorded in Naashoibito rock. The other involved ...

Geologists have calculated the age of Earth at 4.6 billion years. But for humans whose life span rarely reaches more than 100 years, how can we be so sure of that ancient date? It turns out the ...