What’s in a swear? The world’s filthiest words typically refer to something vulgar or taboo, for one. But there’s something else swears across the world’s languages have in common. They’re all missing ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Carmen Álvarez-Mayo does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations ...