How much space do 7 billion people need?

How much space do 7 billion people take up? It depends.

Check out this infographic for a quick visual introduction to how population density and development pattern makes a huge difference in land consumption, among other things.  Per Square Mile points out that the simple visualization just shows the people, but does not indicate the amount of land needed to sustain the population in terms of food, water, transportation networks, building materials, etc. So here’s another image of the size of the footprint the world’s population would make depending on what country is used as a development model.

Density is one of the dirty words of development.  Higher density is equated with grim high rise apartment blocks, crime and overcrowding…although it is also linked to walkability, thriving urban cores, and lower infrastructure costs.  Mostly, though, density is very measurable on a project by project basis (number of housing units or people per acre is very countable and thus easy to administer).  See Strong Towns’ Chuck Marohn’s criticism of density (and planners), too.

So, let’s not get distracted by density and think about productivity, land consumption and carrying capacity and ask: What patterns of development are more productive, consume land more slowly and enable us to live within our resources and how can we foster those patterns rather than the ones we have now?  

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