Were you this child? “Why is the sky blue?” “Why are flamingos pink?” “But why don’t raisins fall to the bottom of the cereal box?” Are you this adult? “Why is the Virgin Mary’s gown always blue?” “How come the Chinese don’t have chop suey or fortune cookies?” “What’s the difference between moths and butterflies?” If this is you, join a class for the habitually curious. We’ll answer all these questions plus some that may have escaped you. “How was one man’s vanity the flash point for World War I?” “Do migrating birds get jet lag?” “And why do men have nipples anyway?” Answers await.