Magnets: They're both positive and negative

Magnets are all fun and sciency until the earth gets knocked off its access.

I don’t have to tell you that magnetic north is different from geographic or true north. We all know Santa’s North Pole stays put right where the giant candy cane was anchored into the permafrost back when he and his merry band of elves started that gift-giving franchise. But magnetic north — to where the arrowy thing in your compass is wont to point — just takes up residence wherever it feels like.

We’ve been able to google that information since James Clark Ross was credited in 1831 with finding magnetic north where...