Earth’s magnetic shield is shifting in dramatic ways. New data from ESA’s Swarm satellites show that the South Atlantic Anomaly — a vast weak spot in Earth’s magnetic field — has grown by nearly half ...

Eventually, the blob of molten material beneath Canada split in two and the stronger one slowly shifted toward the blob beneath Siberia. This spurred the magnetic north pole to slip closer and closer ...

Earth's magnetic poles flip in a process called a geomagnetic reversal. The planet's magnetic field is generated by chaotic flows of molten metal deep inside Earth's core.

Deep inside the mantle of Earth, Stanford scientists have recorded quakes which are physically not explainable.

Two enormous and enigmatic masses of hot rock near the planet's core may play a crucial role in generating the Earth's ...

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