The Earth's magnetic field and oxygen evolved together over 540 million years, according to a major NASA study.

Deep inside Earth, researchers see signs that the solid inner core may be arranged in multiple chemical layers far below.

A study by researchers at the University of Oxford, University of Leeds, and University College London has identified a new constraint on the chemistry of Earth's core, by showing how it was able to ...

Earth's inner core is solid and blistering hot. For decades, scientists have known the inner core is solid thanks to the pioneering work of Danish seismologist Inge Lehmann, who first proposed its ...