Wandering of the auroral oval 41,000 years ago.

Summary: About 41,000 years ago, Earth's magnetic shield dropped to just 10% of its normal strength. The North and South magnetic poles moved far away from their usual spots. This event, called the Laschamps excursion, lasted for about 2,000 years. During this time, the beautiful Northern Lights (auroras) moved closer to the equator. This huge change in the Earth's shield likely affected early humans and the air around our planet. If this happened today, it would wipe out our satellites, cell phone networks, and power grids!