Environmental Studies Courses For a complete list of environmental studies (EVST) courses, please visit the UConn Catalog website. Academic Year 2024-2025 Environmental Studies Courses EVST 1000E 1000E. Introduction to Environmental Studies 3.00 credits Prerequisites: None. Grading Basis: Graded Interdisciplinary survey of relationships between humans and nature; investigation of specific environmental themes and contemporary issues. CA 2.