More than 27,500 rich photographs and illustrations and comprehensive, highly readable text appeal to a broad range of readers. - More than 3,800 expert contributors collaborate with our editors and researchers to ensure that articles are accurate and reflect current scholarship. - World Book revision rates make it the most current and up-to-date encyclopedia available. - More than 65 new and 3,000 revised articles. - Highlighting the 2008 edition are new and expanded articles on electronic games, Google, Inc., George Clooney, and Maria Sharapova, among many others.