Beyond Dome City colonies to Shell Worlds or Paraterraforming...
• http://www.nextbigfuture.comExisting covered areas and domes on Earth are in the 30-40 acre ranges and with costs of $400 million to 1 billion.
Existing covered areas and domes on Earth are in the 30-40 acre ranges and with costs of $400 million to 1 billion.
