Scientists have uncovered new insights into what happened when Earth's magnetic field dramatically flipped 40,000 years ago. During the Laschamps event, Earth's magnetic field weakened to a mere 5 per cent of its current strength, allowing an influx of cosmic rays to penetrate our atmosphere. The weakened magnetic field had far-reaching effects, potentially contributing to climate change, the extinction of …
Movements of the Earth's magnetic field are triggered by rising blobs of molten material within the planet's core, a new model suggests. Researchers modelled the physical conditions within the Earth's core using a supercomputer and found that rising blobs create powerful waves in the core. These waves change the flow of liquid that induces the planet's magnetic field, triggering jerks …
