Pole reversal / shift, NOVA video

[Parsons]

Here is a 55 minute video on the science behind the possible (inevitable if you believe the video) pole shift. In my opinion they do a good job of explaining things in laymen terms. The projection of what might happen doesn't particularly resonate with me, so you may want to take that section with a grain of salt/use discernment. Particularly I think the time-tables used are off(way too long).

Also explains how the Earth protects us from the solar wind, since some seem curious about how that and CME's interact with our magnetic field. Also speculates on Mar's magnetic field (or almost lack-there-of), including that it had a strong magnetic field / atmosphere and that it suddenly/mysteriously disappeared.