Every major city with its population is in itself a contradiction to life in balance with its immediate surroundings. No city can ever be made self-sustanable, and it can never provide for the needs of its population unless it is provided for by using up the existing resources obtained from somewhere else.
They are completely dependent on the subordinate behavior of other regions to provide them with what they need. This is also the dominating mindset that characterizes our decision makers.
The burden of urban survival is to be carried out by regions further and further away from the cities themselves to cope with the necessities of its ever growing populations.
Our cities have not only become a threat to their surrounding nature, and to the regions that provide them with existing resources. They have become a threat to Earth itself, and it is now our Earth who will suffer the consequenses.
The destruction and exploitation of our rural areas is the forgotten other end of every major city’s carrying capacity.