THE EARTH’S MAGNETIC FIELD COULD FLIP FASTER THAN WE THOUGHT. “Regardless of the speed at which it occurs, that next reversal might happen sooner than originally thought. Geophysicists have noticed that the earth’s magnetic field has been weakening faster than expected lately, leading them to conclude that a full flip could happen sooner rather than later. (Don’t panic. ‘Sooner’ in this case, means within the next two millennia.)”