The purpose of this study is to determine the high school students' level of knowledge about global warming and their misconceptions. 592 students have joined to the researching in high schools in central province of Karabuk. Survey of the model is applied in this research; the data collection tool as Yalcin (2010) developed by the "global warming Information Questionnaire" was applied. Besides data analysis, descriptive statistics, t-test and one-way analysis of variance (ANOVA) were used. According to the results of research, despite the high school students' above average levels of information about global warming, there are some issues that have emerged in the missing information. Attending high school students about global warming levels does not show significant gender variable, while the most mind-boggling; class-level and significant difference has been found according to school type variable.