Geologists discovered "gigantic fortresses" under the Earth's crust, which have provided insight into the workings of the Earth's mantle.

The origins of plate tectonics on Earth are hotly debated, but evidence from Australia now shows that parts of the crust ...

Gigantic hidden fortresses discovered 1,800 miles underground in Earth's mantle, rewrite how the planet's interior works.

Researchers recently discovered a huge chain of extinct volcanoes buried deep below South China that formed when two tectonic ...

Lava planets don’t play by the rules of our solar system. These scorching-hot worlds, some no bigger than Earth, orbit so ...

Scientists have uncovered ancient human migration routes hidden beneath the sea, revealing how early humans moved between ...

Our planet has been asteroid-smashed, melted and eroded, enough that most of its original armor has been long buried. Except ...

Strange cone-shaped rocks led scientists to the hidden remains of one of Earth’s oldest asteroid impacts. It could help us find fossil life on Mars.

A large region of unusually hot rock deep beneath the Appalachian Mountains in the United States could be linked to Greenland ...

Scientists thought this crater in Australia was the world’s oldest – but an independent analysis shows they might be off by 800 million years.