When is an engineering action morally permissible and what kinds of behavior are morally obligatory? What must a professional do to be trusted? What is the role of values in bioethical decisions? Is research using human pluripotent stem cells ethical? When is human enhancement ethically right and ethically wrong? What is the moral standing of non-human species? What are the bounds on the engineer's right of conscience? What does it mean to be a good engineer? © 2007 Elsevier Inc. All rights reserved.