Thoroughly revised and updated, Discover Biology, Second Edition, presents the essential concepts of modern biology in a text designed specifically for nonmajors. The authors emphasize a level of detail appropriate for nonmajors, freeing instructors to focus on the scientific issues-HIV, global climate change, DNA fingerprinting, genetic engineering, cancer-that students read about in the paper, vote on in elections, and face in their daily lives. With two new chapters, refined pedagogy and art programs, and a powerful ancillary package, Discover Biology, Second Edition, is the best choice for the nonmajors introductory course.