1. How does the basic idea of accounting or balance apply to the ecological Footprint concept?

2. How many biologically productive acres are available per person for 6.4 billion people?

3. Why might we not want to use all of that?

4. How much does E.O.Wilson suggest we set aside?

5. How does the supply (acres) compare to the current demand (acres)?

6. How high, as a %, is our ecological deficit?  What does that mean?

7. How is it possible for a country to live with a demand that exceeds its supply? (two ways)

8. How many planets would it take to support everyone at the level of the typical U.S. resident?

9. The Living Planet Index, published by the WWF, shows what trend in populations of wild species?