Send us Fan Mail Supposedly, about half of the world population speaks languages that all come from one root language: Proto-Indo-European. How do we know, and where did "PIE" come from? Ukraine, Anatolia, or somewhere else? Did the Indo-Europeans spread out in a massive, peaceful migration of farmers? Or as small bands of shepherds, stealing livestock and killing anyone standing in the way? How do we even know what a prehistoric language sounded like if we don't have any record of their lang...