This title examines the remarkable lives of Mark Zuckerberg, Eduardo Saverin, Dustin Moskovitz, and Chris Hughes and their work building the social networking site Facebook. Readers will learn about each founder's background and education, as well as his early career. Also covered is a look at how Facebook operates, issues the company faces, its successes, and its impact on society. Color photos and informative sidebars accompany easy-to-read, compelling text. Features include a timeline, facts, additional resources, Web sites, a glossary, a bibliography, and an index. Aligned to Common Core Standards and correlated to state standards. Essential Library is an imprint of Abdo Publishing, a division of ABDO.