This study aims to thoroughly examine the opinions of Science teachers working in secondary schools in the Körfez and İzmit districts of Kocaeli, where the intense effects of industrialization and urbanization are felt, regarding the environmental problems in the curriculum and the teaching of these problems. Adopting a qualitative research approach, the survey model was used in this study. The study group consists of 14 Science teachers determined by typical case sampling, one of the purposive sampling methods. In the data collection process, a semi-structured interview form developed by the researcher was used, and the obtained data were analyzed using the descriptive analysis technique. According to the results of the research, teachers stated that they mostly encountered air and water pollution in their environment. In the context of the curriculum, a significant number of teachers emphasized that the lesson durations allocated for environmental issues were insufficient and that the exam-oriented education system (LGS) negatively affected environmental education. In addition, it was determined that concepts such as biodiversity, habitat, and sustainable development were not suitable for the cognitive levels of students. Teachers stated that they could not benefit sufficiently from out-of-school natural learning environments due to economic constraints and bureaucratic obstacles.