I got off my clicky mouse-potato thumbs and typed some search terms into Google. It was only in 96 that they verified the core rotates a little bit faster than the rest of the Earth. It's nifty. :)

I remain skeptical about the ship that can travel through crushing pressure and liquid hot magma though. *g* (I only keep typing "liquid hot magma" so I can hear the Dr Evil voice in my head.)

I wonder how the flipping magnetic poles will affect instrumentation and stuff.