Summary:
The value of air space over an existing plot of land can be commodified and exchanged without any actual physical manifestation. Land, water and air should be treated as inexhaustible sources of collective wealth, which no one is allowed to spoil or destroy for a quick buck. Land, water and air should be valued for the multiple ways we use them. Easy expansion: Mapping air space and transforming it into value have become the norm in urban planning. Colonising air allows for a much easier expansion than land or water..