- M. Bollinger wrote:
I saw a really cool show on Nova (PBS) about this. It really explained it well and had geologic proof of previous flips. It doesn't happen all at once but gradually. In the middle of the flip there will be several magnetic north & south poles that will wander around the world. The result will be global auroras. We will also be subject to more of the solar/interstellar radiation because the magnetic field will be much weaker.
Here's a link to the Nova site that refers to the show:
http://www.pbs.org/wgbh/nova/magnetic/