My apologies, I sometimes cannot resist snarking on grammar and I always experience anguish because I was petty. Between auto correct and such things mistakes habben - to all of us.

People forget but our Earth is a very old and dynamic habitat. It is very much alive, it is still evolving or changing, always changing. The magnetic poles are shifting, as always, and in time will even swap polarities- it happens about every 2-3 hundred thousand years is a current Scientific Wild Azz Guess.

The more we actually learn about Earth we realize we know so little.