Add Yahoo as a preferred source to see more of our stories on Google. Scientists have long thought Earth's inner core is like a huge solid metal ball. But an experiment revealed it may be a lot softer ...

The iron-rich core at the center of our planet has been a crucial part of Earth's evolution. The core not only powers the magnetic field which shields our atmosphere and oceans from solar radiation, ...

A new study challenges the long-held assumption that Earth's inner core is hard, like a solid metal sphere. Instead, our planet's heart is likely much gooier than previously thought, "kind of like how ...