Far below your feet, nearly 1,800 miles beneath oceans and continents, Earth carries two massive scars from its violent youth ...

Beneath the surface of our oceans lies a vast ecosystem so poorly understood that scientists estimate thousands of species ...

A new study suggests that structures at the core-mantle boundary are remnants of an early basal magma ocean linked to Earth's ...

The Earth’s oceans have risen and fallen over the millennia. But they have, on average, been relatively stable over billions of years. The balance of the deep water cycle—the exchange of water between ...

An illustration of Earth as it existed during part of its formation billions of years ago, when an ocean of magma covered the surface of the planet and stretched thousands of miles deep into the core.

In recent years, science has unveiled some astonishing secrets—from what lurks inside black holes to the discovery of a vast new “8th continent.” Even closer to home, researchers have uncovered a ...

Melting polar ice is unleashing stronger, faster currents, reshaping heat flow, nutrient pathways, and microplastic movement ...

Two enormous structures that sit at the border between the Earth's mantle and its core have puzzled scientists for decades.

The world's largest ocean basin is also the oldest. A basin is "a depression, or dip, in the Earth's surface," according to National Geographic. The Pacific Ocean is the largest, deepest and oldest ...

The ocean, blanketing over 70% of the Earth’s surface, is estimated to be home to more than half of all life on our planet.

Coral reefs didn’t merely mirror global change, but helped regulate how fast the climate bounced back from massive surges of ...

Coral reefs have long been celebrated as biodiversity hotspots—but new research shows they have also played a much deeper ...