Oakland-based Redefining Progress and the Earthday Networtk have created an on-line quiz that might get you thinking about your lifestyle. Only 15 questions long, and requiring no registration, the quiz measures how much of the surface of the planet is required to sustain your existence.
In the United States, that average is 24 acres. Compare that with the fact that there are only 4.5 acres per person on the planet and you get some idea of how out of whack our consumer culture is.
Take the quiz here.