Not flipping, as of now
THE EARTH'S geomagnetic field is not in danger of flipping anytime soon. The researchers calculated Earth's average, stable field intensity over the last five million years, and found that today's intensity is about twice that of the historical average. This indicates that the current field intensity has a long way to fall before reaching an unstable level that would lead to a reversal. Proceedings of the National Academy of Sciences, November 23