SINCE the year 1701, when Halley published his famous chart showing curves of equal magnetic variation for the Atlantic and Indian Oceans, the construction of similar charts, amended and enlarged as ...

Our planet’s northern magnetic pole is not only racing toward Siberia at about 34 miles per year, it has been to Antarctica several times in the last million years—and it’s due to flip again. This isn ...

There’s an old saying you used to hear that states: “It’s not where you’re going, it’s how you get there.” With the speed and accuracy of today’s chart plotters, it seems like the “how” part of ...