A magnetic reversal is very unlikely to happen in the next few millennia, anyway. Not well supported. Magnetic reversals happen every few hundred thousand year

A magnetic reversal is very unlikely to happen in the next few millennia, anyway. Not well supported. Magnetic reversals happen every few hundred thousand years, so by that measure there's a 1% chance it will happen in the next few thousand years. The mechanism is not well understood, it has been unusually long since the last flip, and the poles have shown significant activity in the last hundred years. It's hard to assign a probability less than 1%, and there are plausible arguments for higher.