This textbook is intended for ethics courses in engineering and science. It can be used either in a one-credit-hour semester course or as a set of drop-in modules in a core engineering or science course. The text avoids a detailed treatment of the ins and outs of philosophical ethics - a complex subject not needed for most ethical judgments. The approach to ethical problem solving used is one that focuses on analysing the consequences rather than ruels to be obeyed in making decisions. An Instructor's Manual will be available; it will offer a set of "cookbook" lectures to greatly reduce preparation time.