As our world's population grows, so to does our need for energy. Scientists seek the next breakthrough in new technology while constantly finding ways to make current solutions cheaper and more efficient. In this title, discover what hydrogen and fuel cells are, their history, how we use them today, and how new technologies can contribute to our energy future. Learn how hydrogen extracted from ordinary water can be used to power homes and businesses or run fuel cells in vehicles. Sidebars, full-color photos, full-spread diagrams, well-placed graphs, charts, and maps, stories highlighting innovations in action, and a glossary enhance this engaging title. Aligned to Common Core Standards and correlated to state standards. Essential Library is an imprint of Abdo Publishing, a division of ABDO.