This Second Edition of The Cambridge Encyclopedia of Language presents a mass of new information and introduces the subject of language to a fresh generation of students and general readers. Probably the most successful general study of language ever published, The Cambridge Encyclopedia of Language covers all the major themes of language study, including popular ideas about language, language and identity, the structure of language, speaking and listening, writing, reading, and signing, language acquisition, the neurological basis of language, and languages of the world. Exposing this work to a new generation of readers, the Second Edition extends the range of coverage to include advances in areas such as machine translation, speech interaction with machines, and language teaching. There is new material on acoustics, physiological concepts of language, and World English, and a complete update of the language distribution maps, language-speaking statistics, table of the world's languages, and further reading. All geopolitical material has been revised to take account of boundary changes. The book has been redesigned and is presented for the first time in full color, with new pictures and maps added.