These two series volumes should appeal to a wide range of youth. They are both highly readable with interesting anecdotes as well as key scientific information to enable students to make informed choices in lifestyle to lower their risk of cancer. Both books present the development of cancer research with profiles of researchers, including the discoverer of the breast cancer gene, the developer of the Pap smear, and the discoverer of viral-induced tumors. These inspiring profiles also give glimpses into the personal lives and challenges confronting these researchers. Prevention of Cancer focuses on cancers of the skin, uterus, breast, and lung, emphasizing that at least half of cancers are preventable if people avoid risk factors and maintain healthy life styles. Causes of Cancer begins with an early clue to carcinogens with cancer in children who were chimney sweeps. Epidemiology and experimentation are tools to determine the causes of cancer, which include radiation, infectious agents, carcinogens, and heredity. The positive and non-preachy tone of both books empowers students to assume responsibility to reduce their risk to cancer rather than to accept cancer as part of our lives. These are important books for general interest as well as study in health or science classes. Among the seven series titles are discussions of the genetics of cancer, diagnosis and treatment, and stages of cancer.-Marilyn Brien.