The largest piece of Mars ever found on Earth was sold for just over $5 million at an auction of rare geological and ...

Ancient trackways in seabed mud show animals moved purposefully 10 million years before the Cambrian Explosion.

Scientists thought this crater in Australia was the world’s oldest — but an independent analysis shows they might be off by ...

Pillars of hot rock appear to connect continental-size moving blobs at the bottom of Earth's mantle to giant volcanic eruptions at its surface.