There's a billion-year gap in Earth's geological history. A new study seeks to explain the mystery.

Ancient sea organisms survived until a sudden extinction 550 million years ago, revealing what may be the first major mass ...

The phenomenon of the "Great Dissonance", where about a billion years are missing from the Earth's rocks, may finally be ...

Researchers have discovered chemical fingerprints of Earth's earliest incarnation, preserved in ancient mantle rocks. A unique imbalance in potassium isotopes points to remnants of “proto Earth” ...

When we look at the solid ground beneath our feet, it's easy to assume Earth has always been this way. But our planet tells a story so extraordinary, so ...

3. 25 Facts About Geologic Time That Made Our Brains Hurt 4. How Do We Know? A Glimpse into Geologic Sleuthing 5. Our ...