Never read the links. The rate increase of movement to 35 miles a year. From very little. Of the magnetic north. I attribute to changes in the magna influence. It could indicate a small automatic rebalance so a slight change it the north south axis. In an attempt by the earth to deal with centrifical force vector issues. We are talking about possible brutal weight shifts here by human values. Or the consistency of the earths magna may not be a constant.

It has always surprised me we get no obvious surface warming effect from it. Or perhaps we do.