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

Learn how some of Earth’s magnetic field flips last longer than others, weakening our defenses against cosmic radiation.

Earth's magnetic field is generated by the churn of its liquid nickel-iron outer core, but it is not a constant feature. Every so often, the magnetic north and south poles swap places in what are ...

Deep beneath the ocean floor, ancient sediments hint that Earth’s magnetic field sometimes changed far more slowly than expected.

Earth's magnetic field dramatically flipped roughly 41,000 years ago. Now you can actually 'hear' this epic upheaval, thanks to a clever interpretation of information collected by the European Space ...

The continent-sized blobs are much hotter than the lower mantle, creating a significant temperature gradient in the rocky mantle. According to Biggin, a geologist at the University of Liverpool in the ...

Deep inside Earth, two massive hot rock structures have been quietly shaping the planet’s magnetic field for millions of ...

Earth’s magnetic field can linger in a weakened, unstable state for tens of thousands of years before fully flipping.

Scientists have captured magnetic signatures from Earth's ocean tides in the finest detail yet. These faint signals, which certain satellites can detect when flying at very low orbits, may hold clues ...

The emergence of a mysterious area in the South Atlantic where the geomagnetic field strength is decreasing rapidly, has led to speculation that Earth is heading towards a magnetic polarity reversal.

New work from Carnegie’s Peter Driscoll suggests Earth’s ancient magnetic field was significantly different than the present day field, originating from several poles rather than the familiar two. It ...

Earth’s magnetic field is often described as a steady shield, but the geological record tells a more restless story. Polarity ...