Easy-to-read text paired with colorful photos and informative captions introduces readers to a special holiday, Earth Day. Readers will learn about the origin of Earth Day and the conservation movement in the United States. Key players such as Gaylord Nelson and Denis Hayes are introduced, leading up to the very first Earth Day celebration on April 22, 1970. Also discussed are the changes brought about by Earth Day, including the Clean Air Act of 1970 and the Endangered Species Act of 1973. The book concludes with information on how kids can be green in their everyday lives. Features include table of contents, glossary with phonetic spellings, and index. Aligned to Common Core Standards and correlated to state standards. Buddy Books is an imprint of Abdo Publishing, a division of ABDO.