The Earth’s population of seven billion people speaks roughly 7,000 languages, a statistic that would seem to offer each living language a healthy one million speakers, if things were equitable. In language, as in life, things aren’t. Seventy-eight percent of the world’s population speaks the 85 largest languages, while the 3,500 smallest languages share a mere 8.25 million speakers. . . some 85 percent of languages have yet to be documented.From National Geographic.