There are approximately 6000 languages on earth today, the descendants of the tongue first spoken by homo sapiens some 150,000 years ago. How did they all develop? What happened to the first language?In this irreverent romp through territory too often claimed by stodgy grammarians, McWhorter ranges across linguistic theory, geography, history, and pop culture to tell the fascinating story of how thousands of very different languages have evolved from a single, original source in a natural process similar to biological evolution. While laying out how languages mix and mutate over time, he reminds us of the variety within the species that speaks them, and argues that, contrary to popular perception, language is not immutable and hidebound, but a living, dynamic entity that adapts itself to an ever-changing human environment.