tangredsocks Thread
And more importantly why the magnetic center of the earth moves erratically. To summarize my thoughts in a form of a question: How many north's are there? A:3, True, Magnetic, and Map.
The Magnetic part changes direction consistently and we have to measure it about every five years to get a guess on where exactly it is headed.
The kicker (creepy thing for me)? It is speeding up: LINK