This compelling text examines evolution, its definition, and the scientific evidence that evolution has taken place. Readers explore the concepts of natural selection, Darwin's Origin of Species, genetics and evolution, population genetics, patterns in evolution and species concepts, the story of life and geological time, and human evolution. Easy-to-follow narratives offer students additional biological information in sidebars, such as "Closeup" boxes that give details about main concepts and "Try This" boxes that provide safe experiments for readers to perform. The text serves as a must-have resource on modern thinking about evolution and the history of evolutionary theories.