You’re probably familiar with Santa Claus, also known as Kris Kringle, Father Christmas, Jolly Ol’ St. Nick or the Big Man in Red. Whatever name you know him by, Santa is said to fly from home to home ...

Every scout knows how to read a compass, and that there is a magnetic north and a true north. That’s because the Earth’s magnetic field isn’t exactly aligned with the North Pole. Every five years, the ...