Eco-foot printing has become a popular instrument to measure the impact we have on our planet and makes you very much aware of our limitations just as the movie storyofstuff does in a simple way.  With this tool you can have a critical look at your way of live and make it more sustainable so that we can keep a certain quality of life for our future generations. For this purpose they made calculators which give you an idea of your lifestyle. The carbon foot print is also an instrument to measure impact but more focused on the emission of carbon. For more information see panda.org. On the site you should look for the living report where they explain everything about the footprints. You can open here part of the file I uploaded from this site.