Climate change is inarguably the most pressing current environmental issue. While human-caused climate change may be unprecedented, climate change itself is not. Indeed, the average temperature of our planet has fluctuated substantially over many millennia due to natural variability in Earth’s orbit and surface conditions. In this course, we will examine the physical basis for both anthropogenic climate change and natural climate variability. Our investigation will rely heavily on climate data. While we will use such data to explain climate change on various time and spatial scales, we will also discuss how these data are obtained, analyzed, and presented. Students should therefore be comfortable with mathematical and scientific notations and visuals (e.g., equations and graphs) as well as basic quantitative analyses (e.g., algebra). Students will also be expected to read and objectively summarize several articles on various climate-related topics throughout the semester.