Introduction : what is bioethics? -- Technology, nature, and responsibility -- Ethical issues and theories -- Common terms used in bioethics -- Abortion -- Reproductive technologies -- Early diagnosis of genetic anomalies -- Definitions of death -- Forgoing and withdrawing treatment -- Euthanasia -- Physician-assisted suicide -- Genetic engineering : nonhuman organisms -- Genetic engineering : human beings -- Cell-based biotechnologies -- Organ and tissue transplantation -- Research on human subjects -- A whole earth ethic.