magnetic reversals have happend 171 times in the last 76 million years with 14 of those happening in the last 4.5 million years, whilst thay are definitely cyclic the reversals appear to vary in time, making the next one an uncertainty. there are symtoms that procede the flip such as abrubt changes in weather pattens and a rapid awakening of the plannets magnetic field. and yes you right the 2012 nutters love it because it fits in with the mayan calculations and alot of other religions also say that in 2012 there will be an awakening. not the end of the world :laugh: :laugh: not as we know