Research reveals 'fundamental finding' about Earth's outer core

The Earth's core is an exceptionally difficult place to study. Its depths descend a staggering 2,900 kilometers—about the distance from New York City to Denver—and its extreme, otherworldly conditions are extraordinarily ...

A huge hydrogen generator at the Earth's core-mantle boundary

Splitting water into hydrogen and oxygen is a major theme in the development of clean, abundant energy source. A new study led by an international research group revealed that when water meets the iron core of the Earth, ...

Mysterious deep-Earth seismic signature explained

New research on oxygen and iron chemistry under the extreme conditions found deep inside the Earth could explain a longstanding seismic mystery called ultralow velocity zones. Published in Nature, the findings could have ...

Developing a picture of the Earth's mantle

Deep inside the earth, seismic observations reveal that three distinct structures make up the boundary between the earth's metallic core and overlying silicate mantle at a depth of about 2,900 kilometers—an area whose composition ...