The Earth's Inner Core

Earth's Moving, Melting Core in Science.

Strange forces are at work 5000 kilometers below Earth's surface. The inner core is acting in ways that scientists can't explain. Theoretically, the core should be drawing iron from its molten surroundings and crystallizing it into solid metal. But that alone doesn't account for a number of odd observations—unless, as a few scientists speculate, the core is also melting.