A new study out this week said that the Earth's inner core is less solid than previously thought. Scientists still have questions, though.

Researchers studying decades of earthquake data say they have found the first evidence that, in addition to spinning backward ...

Earth science concentrates on investigating how the planet works and why. This field delves into the many layers of the Earth and explains how those pieces fit together into a cohesive structure.

The cool conditions which have allowed ice caps to form on Earth are rare events in the planet’s history and require many complex processes working at once, according to new research.

Eric Mack is a reporter covering science, sustainability and space ... new findings that researchers say shows the rotation of Earth’s inner core is slowing down relative to the spin of the ...

"We don't know for sure," Bradford Foley, a geodynamicist at Penn State, told Live Science. "I think it's still considered one of the great unsolved problems in geophysics today." Earth's ...

It came against a long-term background of a gradual slowing of Earth’s rotation, caused by the the ebb and flow of tides, the flow of magma, the melting of ice caps and other factors that ...