Throughout history humans have used nonhuman animals in many different ways to ensure the success of their survival, and throughout history there have been differing opinions about how and when animals should be used for satisfying human needs. Some argue that we should no longer use animals in ways that seem to exploit them. Others argue this is okay as long as the animals are not hurt. In this four-volume set, information is provided in an objective manner to encourage students to think critically and to form their own opinions about this important topic.