Designed to give students a deep understanding of the central topics of introductory biology, E. O. Wilson’s Life on Earth is a captivating iBooks Textbook presented as a seven-unit collection. In this first unit, we explore the unity of life by examining the shared features of all living things, inherited from a universal common ancestor. In addition, we look at the evolutionary mechanisms that—over the course of 3.5 billion years—created the countless species and forms of life that populate our diverse living planet. Each unit of the engagingly interactive E. O. Wilson’s Life on Earth features video, photo galleries, and Multi-Touch images and illustrations that inspire students to study, enjoy, and help protect the wonders of life on Earth. Exclusively available as an Apple iBook.