The National Institute of Health recently announced its plan to retire the fifty remaining chimpanzees held in national research facilities and place them in sanctuaries. This significant decision comes after a lengthy process of examination and debate about the ethics of animal research. For decades, proponents of such research have argued that the discoveries and benefits for humans far outweigh the costs of the traumatic effects on the animals; but today, even the researchers themselves have come to question the practice. John P. Gluck has been one of the scientists at the forefront of the...