A general introduction to topics in the earth sciences for which no regular course is available, but adequate texts, library holdings, and laboratory resources exist. Examples of possible areas of study include relevant or timely problems in earth science such as global environmental change, energy and water resources. It is designed for non-majors or entry-level earth science majors, and resumes no prerequisites. *The parentheses will be filled with an appropriate short description on the student's transcript to indicate the subject area studied.