This title examines an important historic event - the Three Mile Island nuclear disaster near Middletown, Pennsylvania. Easy-to-read, compelling text explores the history of nuclear power in the United States, how a nuclear plant works, details of the emergency at Metropolitan Edison Company's nuclear power plant, handling of the disaster by the Nuclear Regulatory Commission, President Jimmy Carter's visit to Three Mile Island, the investigation into the disaster, and the effects of this event on society. Features include a table of contents, glossary, selected bibliography, Web links, source notes, and an index, plus a timeline and essential facts. Aligned to Common Core Standards and correlated to state standards. Essential Library is an imprint of Abdo Publishing, a division of ABDO.