Each of the books in the Dimensions of Science series describes modern scientific discoveries in a social context. This textbook combines the basic physiological facts of human reproduction with an account of the techniques used in IVF (in vitro fertilization), to illustrate not only the scientific and clinical aspects of human infertility, but also the way in which science develops and generates ethical issues of concern to all. The author uses key discoveries in the historical development of test-tube babies to explain how IVF works, based on current practice and research. Although written primarily for students taking A and A/S level biology and human biology courses, the book can also be read by undergraduate biologists and medical students.