A teaching guide with eleven lessons on the atmosphere, and the impact that different kinds of energy have on the atmosphere and ecological systems. The unit and accompanying PowerPoint can both be downloaded.

Humans are having a negative effect on the ecology of Antarctica. Get the facts on krill harvesting, global warming, and ozone depletion.

Read and take action to fight global warming with these 6 tips, complete with links and other climate change resources.

This site is an interesting article about Lake Baikal in Russia. This unique lake is helping scientists to learn more about the patterns of ecological change in the world and about the history of the world.