Buried more than 3,000 miles beneath our feet, Earth’s solid inner core was once thought to be unchanging—locked in place at the heart of the planet. But new research has revealed something much more ...

Iron is one of the main elements found in the Earth's inner core ... both in the Earth's core or in other pressure-temperature regions of the iron phase diagram. "It would now be fascinating ...

When an electric current passes through a metal wire, a magnetic field forms around that wire (see diagram at right ... from the surface of the solid inner core. Although it may seem ...