Moral teachings and ethical questions about the creation and use of science and technology have been a part of religious and philosophical traditions from the earliest periods. Today, the challenges are more global in scope. New fields of ethical reflection - computer ethics, environmental ethics, communication ethics, genethics - are emerging to deal with the world that science and technology have created. The Encyclopedia of Science, Technology, and Ethics considers both the professional ethics of science and technology, and the ethical and political issues raised by science and technology in an increasingly complex and global society. This broad coverage supports the numerous courses in applied and professional ethics and policy related to the practice of science and technology in education. Additionally, it provides a practical introduction to useful knowledge and ideas for both professionals and general readers.