Earth is covered in water—but scientists still debate how it got here in the first place. This video explores the mysterious ...

Scientists trying to work out whether a star exploded and the resulting debris crashed into Earth 10 million years ago may be one step closer to solving the mystery. They discovered an unusual amount ...

When Earth was a molten inferno, water may have been locked safely underground rather than lost to space. Researchers discovered that bridgmanite deep in the mantle can store far more water at high ...

Add Yahoo as a preferred source to see more of our stories on Google. Pacific Ocean - A view of the Pacific Ocean from the Santa Monica Pier in California. Where did all the water come from? Water, ...

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” ...