Amusement parks are generally viewed as cheerful, happy places—but if you look below the bright and colorful surface, you’ll often find something a little spookier. For example, there are loads of haunted theme park attractions in the world—or at least, allegedly haunted attractions. Many of these ghost stories are just that—stories—but sometimes, there’s a kernel of truth to be found there, too.
From the aliens of Toy Story to The Flintstones’ Great Gazoo, images of extraterrestrial beings—no matter how wide and varied they might be—often have one thing in common: Their bright green color. But why do we call aliens “little green men” at all? Why have we so frequently imagined them as that single shade for so long? The answer, it turns out, is more complicated than you might think.