Earth’s magnetic poles have flipped dozens of times since the planet formed, with north and south changing places after they get tired of the old scenery. These geomagnetic switcheroos aren’t scheduled events. They started happening roughly every 100,000 years. More recently, they’ve slowed to about half that rate. And during some stretches, they seemed to […] The post How Many Times Have Earth’s Magnetic Poles Flipped? appeared first on VICE .