Earth's Interior

Southern reaches not as old, worn-down as thought.

Seismic data gives new estimates for curst of least-known continent.

Geologists destroy gems to discover how magma melts 150 miles below Earth's surface.

Iron from Earth's core is leaking into parts of the mantle.

Accounts for why some spots have higher concentrations of the rare metal.

Ambient noise generated by the planet sheds light on its inner layers.

World's biggest carbon reservoir at center of the Earth, according to new computer model.

When Earth's outer layers wander, its bulge may snap them back into place.

Jet of magma may have fueled volcanism that contributed to dinosaurs' demise.

Computer models and rock records used to track "true polar wander."