To what degree is the Space Station self sufficient?
When the CanAmerica Space Station was first built one of the top priorities was to make it completely self sufficient. The reasoning behind this was that they were expecting Earth to have more and more problems, and that there would no longer be human life on the planet after the year 2200. In the year 2118 there is trade with Earth, the Moon and Mars although it is more for luxury items than for real necessities.
