These courses have no prerequisites in physics or mathematics: 01:750:106, 109, 110, 140. Most are relatively nonmathematical. Concepts of Physics for Humanities and Social Science Students (01:750:106) discusses fundamental concepts of physics from a historical, sociological, and religious point of view. Astronomy and Cosmology (01:750:109,110) are descriptive courses designed for nonscientists, requiring only minimal high school mathematics. Either may be taken without taking the other. The Greenhouse Effect (01:750:140) is concerned with the scientific aspects of global warming. It is intended for liberal arts majors and is closed to natural science majors.