ENVS 199 Global Climate Change surveys the science of climate change, including geologic, isotopic, ice-core, and modern climate records, climate modeling, future climate predictions, and human contribution to climate change. Students explore Earth's climate system, greenhouse effect, Earth-sun relationship, energy budget, oceanic and atmospheric circulation, supervolcanoes, glaciers and ice, carbon cycle and sequestration, the influence of life on climate, and climate feedbacks and tipping points. A persistent theme in the course is how old and new energy technologies relate to Earth's energy and climate systems. The course analyzes the predicted impact of global climate change on weather, water resources, ecological, and human systems. Students investigate the potential for easing collective and personal human effects on the climate and examine actions that could help sustain stable climate and living systems