Deep inside Earth, researchers see signs that the solid inner core may be arranged in multiple chemical layers far below.

Beneath Earth s surface, nearly 3,000 kilometers down, lies a mysterious layer where seismic waves speed up inexplicably. For decades, scientists puzzled over this D' layer. Now, groundbreaking ...

One of the strangest mysteries about our Earth is the presence of two dense, giant blobs inexplicably clustered above the planet's core. Now, new models might reveal where they have come from, and ...