Same as ENV 150. A geographic information system (GIS) enables data and maps to be overlain, queried and visualized in order to solve problems in many diverse fields. This course provides an introduction to the fundamental elements of GIS and applies the analysis of spatial data to issues in geoscience, environmental science and public policy. Students gain expertise in ArcGIS — the industry standard GIS software — and online mapping platforms, and carry out semester-long projects in partnership with local conservation organizations. Enrollment limited to 20.