The North Pole moves as ice sheets melt (Greenland is losing mass)

[defacto7]

6. Pole shift... They mean geographical North?

There are 2 poles, geographical and magnetic. Every couple hundred thousand years or so the magnetic pole turns completely around; south switches with north. Ice melt can shift the geographical pole I guess since the crust is basically floating.

Edit: I goofed up my info.... From NASA:

Earth has settled in the last 20 million years into a pattern of a pole reversal about every 200,000 to 300,000 years, although it has been more than twice that long since the last reversal.