Deep beneath our feet, something extraordinary is happening. Scientists have discovered that changes in Earth's core are ...

The Sun’s magnetic field is invisible to our eyes, but it quietly shapes everything from the shimmering auroras over the ...

Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth. Nov 28, 2025, 07:59am EST Map of the strength of the Earth's ...

A growing “dent” in Earth’s magnetic field over the South Atlantic has expanded dramatically in the last decade, raising concerns about satellite safety and space radiation. A leading magnetic field ...

A magnetometer is a device that measures magnetism: the direction, strength, or relative change of a magnetic field at a ...

Our planet’s magnetosphere has seen dramatic shifts across its history—even total reversals—but this recent wrinkle doesn’t pose a threat to life Earth’s magnetic field surrounds the planet, with ...

Artifacts from the Iron Age have revealed an intense historical magnetic anomaly in the Middle East. Could using a similar approach elsewhere help us unravel the mysteries of Earth's magnetic field?

The magnetic compass is the last unknown sense in migrating animals. For some scientists, the monarch butterfly is leading ...