Deep inside Earth, researchers see signs that the solid inner core may be arranged in multiple chemical layers far below.
The solid metal core of Earth does not rotate perfectly in time with the outer layers of the planet, and new research confirms that it has now reversed direction. Seismic waves passing through the ...
Deep beneath our feet, far beyond the reach of drills or submersibles, Earth hides a solid metal heart that behaves in ways geophysicists have struggled to explain. New experiments now suggest that a ...