Cartoon cross section of the Earth showing the mantle, outer core and inner core. Convection in the outer core produces Earth's geomagnetic field. The properties of Earth’s iron-rich core are key to ...

Deep inside Earth, far below the crust and mantle we learn about in school, scientists are mapping strange, continent-sized structures that appear to shape everything from volcanic hotspots to the ...

the Earth you walk on today might not be the same planet that was born 4.5 billion years ago. Many scientists believe that in its infancy, Earth collided with another world the size of Mars, and that ...