This course explores (1) the dynamic and complex interconnected systems of our planet and (2) the current global climate crisis. In the first part of the course, students survey the basic workings of planet Earth, from plate tectonics, the rock cycle, geologic time, mountain formation, and natural hazards such as earthquakes and volcanoes. The second part of the course is devoted to the study of Earth’s climate system and the current global climate crisis. Students will study Earth’s energy budget and the effects of various natural and anthropogenic factors that control the climate, such as solar radiation, greenhouse gases, aerosols, ocean circulation, Milankovitch cycles, El Niño events and volcanic eruptions. The study of positive and negative feedback loops helps students understand past climates and predict future climates. Students use global computer models to predict the effects of increasing atmospheric CO2 to surface air temperature, ice cover, global albedo, precipitation, etc. These models help students quantitatively assess the effects of natural and anthropogenic causes on the current climate crisis. A final project focuses on our ever-growing energy needs in the context of the global climate crisis. Local field trips complement classroom discussion. Prerequisite: One year of physics or chemistry. Open to uppers and seniors. This course meets during a reserve format in order to create a double-format meeting time for field trips. Offered: fall term.