This study examined the attitudes and behavior of Ajman University of Science and Technology (AUST) students towards the environment according to their gender and college. The research was based on a descriptive approach. The sample consisted of (375) students (230 males and 145 females) from different colleges (Law, Information Technology, Mass Communication and Humanities, Engineering, Dentistry and Pharmacy). The Attitudes and Behavior Scale Towards the Environment (ABSTE) was used to investigate students' attitudes and behavior towards the environment, and a questionnaire was used to evaluate the environmental sciences course. Results revealed wide differences in the environmental attitudes and behaviors between the undergraduate students enrolled in environmental sciences course and others who did not study the course yet. Findings also showed that females have higher positive environmental attitudes and behaviors than males. Students of Dentistry and Pharmacy colleges have higher positive environmental attitudes and behaviors than students of Law and Information Technology or Mass Communication and Humanities colleges. Engineering students have the least positive environmental attitudes and behaviors. The results generally assert the importance of environmental education in university.