The New Penguin Encyclopedia forms an integral part of Penguin's expanding reference publishing programme. Edited by David Crystal, without doubt the UK's most widely respected reference editor, it offers more information and detail than any other comparable British encyclopedia. Its authoritative coverage runs from Aachen to Zygote, with over 27,500 articles on all branches of human knowledge. In all, it contains over 2 million words and over 300 charts, maps and diagrams.