JAN 19, 2004 - Earth's Inconstant Magnetic Field is essential background for everyone in this day and age, when our home planet is in a time of magnetic flux. For one thing, Earth is always in a state of magnetic flux, as this NASA website makes clear. And don't fret about the magnetic field disappearing, either. It's about twice as strong as average now, even though it's been decreasing lately. Besides, it doesn't really disappear, even in the middle of a magnetic polarity reversal: it just gets, as Earth's Inconstant Magnetic Field explains, a bit more complicated than usual. Part of the present complication is that the north magnetic pole is racing northward through Canada at about 25 miles per year. At that rate, it'll be in Siberia in a few decades!
