Earth’s interior

Earth's Inner Core: A mixture of solid Fe and liquid-like light elements.

Earth’s heat may dissipate sooner than previously thought.

New observations of the atomic structure of iron reveal it undergoes "twinning" under extreme stress.

The work suggests the core could be the planet’s largest reservoir of that element.

Traces of Earth’s early magma ocean identified in Greenland rocks.

The theory may provide an origin story for subduction.

Most of what we know about the interior of the Earth comes from the study of seismic waves from earthquakes. These waves contain vital...