Our planet has been asteroid-smashed, melted and eroded, enough that most of its original armor has been long buried. Except ...

Geologists have long debated whether a stony formation in Canada contains the world’s oldest rocks – new measurements make a ...

Scientists have found a massive funnel-shaped region beneath the Midwest that is drawing rock from across North America toward it in a horizontal flow, before pulling it down into the Earth's mantle.

This "virtual Earth" is the first computer model that "views" the crust and mantle as an interconnected, dynamic system, the researchers reported Oct. 30 in the journal Science Advances.

Earth's mantle -- the layer between the crust and the outer core -- is home to a primordial soup even older than the moon. Among the main ingredients is helium-3 (He-3), a vestige of the Big Bang ...

Earth is missing a huge part of its crust. Now we may know why. A fifth of Earth’s geologic history might have vanished because planet-wide glaciers buried the evidence.

Earth's crust today has a surprisingly similar composition to the planet's first outer shell, or "protocrust," new research finds. This early rocky shell featured chemical signatures previously ...