How big is your "ecological footprint"? This term was first coined by Prof. Bill Rees at University of British Columbia over a decade ago.
It is a metaphor used to depict the amount of land and area a human population would hypothetically need to provide the resources required to support itself and to absorb its waste, given prevailing technology.
Here is a questionnaire (pdf file) that can be used to calculate your ecological footprint and compare it to others around the world.
I can see this being a useful tool in a small discussion group at church and could lead to some good dialogue on sustainability and a Christian's responsibility.
