From this page, you can access the activities grouped in pods around major areas, such as air or energy. Each pod consists of several multi-week modules that are centered around different environmental topics. As an example, the Air Pod is made up of modules on atmospheric pollution, carbon cycling, and ozone. Each of these modules is comprised of 3-5 activities that investigate the topic in depth over several weeks, concluding with a capstone activity that investigates the personal impact of the individual in that area.
Each pod could be used as one semester's worth of activities for a course. This would be particularly useful for an environmental or earth science course that investigates one particular aspect of the Earth. To see how these activities might be grouped together around much smaller topics, click on the Module link.