Earth's magnetic field is generated by the churn of its liquid nickel-iron outer core, but it is not a constant feature.

The South Atlantic Anomaly, a weak spot in Earth's magnetic field, has expanded by nearly half the size of continental Europe ...

A team of geologists found for the first time evidence linking regions of low seismic velocity and the shape of the Earth’s magnetic field.

The continent-sized blobs are much hotter than the lower mantle, creating a significant temperature gradient in the rocky ...

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

Exploring Earth's deep interior is a far bigger challenge than exploring the solar system. While we have traveled 25 billion ...

While we have sent probes billions of kilometers into interstellar space, humans have barely scratched the surface of our own ...

Learn about the continent-sized rocks hidden deep within Earth's mantle that have influenced the magnetic field for millions ...

Hidden mega-structures deep inside Earth may have been quietly steering our planet’s magnetic field—and rewriting what we ...

"A strong magnetic field is very important for life on a planet." ...

Ancient volcanic rocks reveal how two giant hot regions beneath Africa and the Pacific have shaped Earth's magnetic shield.