Annenberg Foundation
Annenberg Learner: The Habitable Planet: Energy Lab
Try and meet global energy demands by using alternative energy sources while keeping the carbon levels in the atmosphere down to acceptable levels. Simulator includes a data table available for download for student records.
NASA
Nasa: The Basics of Ocean Chemistry: Carbon, Circulation, and Critters
An explanation of ocean chemistry, supported by illustrations, for example, of the global carbon cycle in the 1980s and the annual carbon dioxide flux. The concentration of nutrients in the ocean is discussed for its impact on marine...