Do you believe in perpetual motion?

I hate to burst your bubble of carbon dioxide but carbon dioxide isn't a piece of paper you stick to a window. Even if it were, the level of light that pes through the window does decrease up to opacity. By the time the carbon dioxide reached this point, it would have released all the methane hydrate locked up in the arctic and we would be in deep doo-doo. This could only benefit the people who want to sell beach-front property in the Rockies.