Oceans are Earth’s defining feature, its largest ecosystem, and the engine that powers our planet.

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

New simulations reveal that an ancient ocean of magma located above the Earth's core continues to shape the planet's ...

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

In Antarctica, scientists using the ANITA experiment detected unusual radio signals emanating from within the Earth, defying known particle physics. These signals, unlike those from space ...

ETH Zurich scientists confirmed that solid rock flows deep inside Earth, solving a decades-old mystery about seismic waves. Earthquakes, volcanic eruptions, and drifting continents all remind us that ...

We set out to explore one of the largest caves ever discovered – and the scale was beyond anything we imagined. In this video, we take you deep inside massive chambers, underground rivers, and ...

A new study by an international team of researchers has uncovered troves of microbes thriving in the hostile subsurface of the earth, far from the life-giving energy of the sun.

Though it might not seem like it on a cold day in winter, the Earth is actually technically inside the atmosphere of the Sun. But evidence outlined in a recent paper suggests it hasn't always been ...

A diagram shows Easter Island's tectonic context. The researchers believe the volcanoes that created the island included some ancient material from the mantle plume.

How does the inside of the Earth stay boiling hot for billions of years? Henry, age 11, Somerville, Massachusetts Our Earth is structured sort of like an onion – it’s one layer after another. Starting ...