Imagine a world in which nothing is mined, where all the mineral resources we will ever need as a society have been extracted, and circulate perpetually in the economy, being endlessly transformed from finished goods into raw materials, and back again, with nothing input except renewable energy. This is a world of increasing material efficiency, and static population, in which standard of living is not defined by quantity of materials consumed. Buildings are de-constructed and re-assembled. They are designed with this in mind. Acid mine drainage is a thing of the past, and the mountaintops of West Virginia have regrown their deciduous veneer. Landfills are systematically emptied, and the copious resources placed within them by previous generations are re-organized into their useful constituent parts.
In response to What comes after green?