This combined lecture and discussion course examines Earth's climate system and the feedbacks that affect it over annual to millennial (thousands of years) timescales. It is a highly interdisciplinary course that integrates information on climate from atmospheric, oceanographic and geologic sciences, and broadens overall comprehension of natural and human-invoked changes in earth's critical zone systems. Students from meteorology, environmental science and policy, and ecology should find this course highly informative and useful. Topics include past and present records of climate change, the various fields of study that contribute to climate knowledge, the effects of scale and frequency on the quality and reliability of climate records, and the state-of-the-art in climate assessment and prediction. Lecture sessions will provide fundamental information, especially with regard to the scientific basis for our current understanding of climate, and will introduce "hot" topics for discussion. Discussion sessions will focus on the most-recent status of these "hot" topics using recently published scientific papers and also online professional-level discussion forums. The role of science in politics and society will be an integral part of many of these discussions, including the obstacles created by declining public proficiencies in science and math and varying perceptions of risk.