Add Yahoo as a preferred source to see more of our stories on Google. Scientists from China and United States have discovered that the Earth’s inner core has another core at its centre.A research team ...

Add Yahoo as a preferred source to see more of our stories on Google. The Earth's internal layers including the mantle, outer core, and inner core. Scientists believe that the inner core’s rotation ...

Earth’s inner core is changing shape, scientists have found. The discovery resolves a long-simmering controversy about what’s happening at the heart of the planet — which was long thought to be solid ...