Description This book describes the history and science behind nanotechnology, including the new ideas and applications scientists are currently working on. Informative sidebars, a "How It Works" special feature, a table of contents, quiz questions, a glossary, an index, and additional resources assist and engage readers as they learn. This Focus Readers series is at the Navigator level, aligned to reading levels of grades 3-5 and interest levels of grades 4-7.