Earth is made up of several layers. The crust, which includes the surface of Earth, extends only 40 km (25 mi) deep.

Seismologists detected a lens-shaped structure (blue) within a large pile of chemically distinct material at the boundary between the liquid outer core and the solid mantle, half-way to the center of ...

Unexpected Metal Flow Challenges Theories Of How Earth's Magnetic Field Forms A bold experiment shows a dramatic improvement in our understanding of the planet beneath our feet. Dr. Alfredo Carpineti ...

Every so often, Earth's magnetic poles completely flip. What causes this to happen? And how do these reversals affect life on Earth? When you purchase through links on our site, we may earn an ...