The Climate System is a course belonging to Columbia University's Earth System Series curriculum. Although it is not an online course, Web surfers can take a peek at what the students are learning through the lecture and lab notes which are posted online. Clicking on "semester schedule" will take you to these links. Numerous subjects dealing with global climate are presented, including the Earth's radiation budget, surface water, major atmospheric forces, ocean circulation, and more. The lecture notes list "take-away ideas" and provide topical summaries with selected images from lecture slides. The lab pages vary by instructor-author, but most give brief introductions to lab topics, terms, constants, and formulas, and some include a list of suggested readings. A few links to related Websites are included in the text. This site is a good study guide for undergraduate students and would also be of interest to anyone wishing to learn more about climate, especially during this time when global warming stories are featured prominently in the mass media.