Professional codes of ethics are not consistent across countries. Scientists and engineers increasingly work in cross-cultural environments that necessitate skills to negotiate changes in ethical standards in a single, transnational workplace. This module discusses transnational aspects and applications of professional codes of ethics. Includes essays on the Roots of Interconnection: Communications, Transportation and Phases of the Industrial Revolution; the Transnational Aspects of the Ethical Debate, Multinational Corporations in Transnational Accountability; and Resolving Ethical Disagreements. As well as resources outlining the Sources and Extent of Environmental Harm, the UNESCO Description of Engineers’ Work, WFEO’s Model Code of Ethics, and Organizational Diagrams of select Scientific Organizations.