Quiz yourself every day—and maybe learn a little something you didn’t know the day before. That’s the fun of trivia, and 365 TRIVIA FACTS is the calendar for die-hard trivia buffs. Speaking of which: How did enthusiasts come to be called buffs? Plus nature stuff: How much does the Pearl of Allah, the largest pearl on record, weigh? Movie stuff: Why was the “III” dropped for the film adaptation of the play The Madness of George III? And cuckoo stuff: In Switzerland, what animal brings Easter eggs?