This document presents an overview of ethics with respect to science and research. It begins with definitions of ethics and discusses ethical theories like deontology, teleology, and utilitarianism. It then examines important historical events that shaped modern research ethics like the Nazi medical experiments and the Nuremberg Code. The document outlines principles for ethical research like informed consent and protecting vulnerable subjects. It discusses ethical concerns in qualitative and quantitative research and emphasizes the importance of ethics in protecting participants and ensuring research is conducted safely and for the benefit of all.