Make a Difference: 5 Sites to Calculate Your Carbon Footprint
Calculating your carbon footprint is a lot easier on the Internet. Because, admit it, was anyone actually doing it before? Run scenarios that can show you how simple changes (like putting in energy efficient bulbs or walking just a bit more) will make a difference. My own impact turned out to be a lot larger because even though I do recycle, we have energy efficient light bulbs, and walk often - we also fly many times a year.