Earth’s magnetic field may be about to reverse, which could have devastating consequences for humanity.
Scientists think that Earth is long “overdue” for a full magnetic reversal and have determined that the magnetic field’s strength is already declining by 5 percent each century. This suggests that a fully reversal is highly probable within the next 2,000 years
Earth’s magnetic field surrounds the planet and deflects charged particles from the sun away, protecting life from harmful radiation. There have been at least several hundred global magnetic reversals throughout Earth’s history, during which the north and south magnetic poles swap. The most recent of these occurred 41,000 years ago.
During the reversal, the planet’s magnetic field will weaken, allowing heightened levels of radiation on and above the Earth’s surface. The radiation spike would cause enormous problems for satellites, aviation, and the power grid. Such a reversal would be comparable to major geomagnetic storms from the sun.