Far below the familiar blue of the surface oceans, geophysicists are piecing together evidence for a vast, hidden reservoir of water locked inside the planet itself. Instead of filling open caverns, ...

Massive ocean discovered beneath the Earth's crust containing more water than on the surface ...

An underwater volcano in the Pacific, Axial Seamount, reveals a process that could challenge current theories about the Earth ...

Picture all of Earth’s oceans, which cover about 70% of the planet and are mostly made of hydrogen. Now multiply that by nine. That may be the amount of hydrogen in Earth’s core, possibly making it ...

Africa’s Turkana Rift Zone, a hotbed of hominin fossils, is caught in the act of “necking," a critical transition toward ...