WASHINGTON (Reuters) - Scientists using an ocean drilling vessel have dug the deepest hole ever in rock from Earth's mantle - penetrating 4,160 feet (1,268 meters) below the Atlantic seabed - and ...

Earth's deep mantle stored enough water in rocks to equal one ocean during our planet's early molten days, helping explain ...

Researchers have drilled a window into the layer of our Earth that is responsible for volcanic activity, crust formation, and earthquakes. The mantle is incredibly difficult to study because it’s so ...

When the early Earth’s magma ocean crystallized 4.4 billion years ago, the deep mantle trapped an ocean’s worth of water, scientists say.

Far below the oceans and continents we know, Earth’s deep mantle appears to have stored far more water in its early history ...

Earth’s origin story has always had missing pages, from the chemistry of its first crust to the ingredients that seeded life. Now, a series of breakthroughs, from asteroid samples to ancient rocks ...

Today, oceans cover about 70% of Earth’s surface. This stark contrast has long driven scientific interest in how water ...

A thin slice of the ancient rocks collected from Gakkel Ridge near the North Pole, photographed under a microscope and seen under cross-polarized light. Field width ~ 14mm. Credit: E. Cottrell, ...

Earth’s deep interior still shapes the world above your feet. Water trapped far below the surface helps control how rocks ...

I recently participated in a three-week-long, National Science Foundation-funded research cruise to the Mariana Trench. Our target was an east-to-west transect starting near Guam, over the Challenger ...