Video: The Poleshift
I don't agree with the suggested cause of the pole shift cycle in this video. But I like that people are thinking about it and trying to explain how it happens. It still presents some evidence and supports the basic idea that there is a cycle of cataclysmic pole shifts - and it's entertaining and fast paced. And if I'm wrong and their theory has merit, maybe it will stimulate more observation and research to prove it.
[youtube https://www.youtube.com/watch?v=yWP_Ha_Yg9I&w=862&h=647]
Of course - I think if you are interested in detailed evidence you should check my book: