Earth's magnetic field likely to flip in near future (centuries, perhaps)

 A timely article appeared in Science News, about how the rotation of the liquid iron core of the earth may be reversing its rotation! As weird as it sounds, this is something that happens naturally and numerous times in earth's history. The result of that reversal of rotation would be a reversal of the North and South magnetic poles of the earth. Again, this is normal, but hasn't happened since modern humans have been around.