Global environmental change problems such as carbon dioxide and the greenhouse effect, acid rain, chlorofluorocarbons and the ozone layer, global deforestation and the effect on climate, etc. GES majors only. Pre: OCN 201, ATMO 200, ERTH 101, ERTH 103, or ERTH 170; or consent. (Cross-listed as ATMO 310 and OCN 310)