This page addresses an urban infrastructure concern.

As proposed by Richard Register, ceasing to interfere with ecosystems and building urban infrastructure to fit its constraints perfectly, makes an eco-city. This can be interpreted in various ways:
  • The city fits as a symbiote into its environment rather than as a parasite.
  • The city's only living elements are human but these work together in a hive, e.g. arcology as proposed by Paolo Soleri - a "spaceship on Earth" but one that still relies on flows available on Earth itself.

The Chinese Harmonious Living Index seems to be an attempt to integrate ecological footprint as a set of raw measurements with ecological wisdom specific to an area. This is a minimal concept of an eco-city.

localize, standardize, dialogue, exchange

In all of these definitions:

Regional and global dependencies are minimized for low ecological footprint. The instructional capital associated with local infrastructure of appropriate technology for that region, i.e. sustainable trades, are standardized and diagnostic dialogues are also standardized so best practice exchange can occur easily. As the Civic Efficiency Collaborative proposes.

space colony

A space colony necessarily satisifies all of the above requirements since it has no natural capital whatsoever and relies wholly on solar and mineral forms of energy and materials.

Reliable self-sufficient manufacturing would be required to have any chance of such a colony surviving more than a very short time.