According to the WHO and other sources, the human population of the planet is now more than 7 billion. Huzzah. Bacteria everywhere can rejoice, for more humans means more hosts for single-celled creatures who call us home.
Claims about overpopulation and resource scarcity have not played out in a simplistic Malthusian fashion. Here in the U.S. we haven't run out of either land, food or energy. Cheap land seems to be constrained in specific areas but this is more a consequence of preference and bias. Relative to the efforts expended historically and many other parts of the world, food and energy are incredibly cheap. Energy, and by default, food costs will probably rise in the near-term, but that will hopefully spur new solutions (through a combination of free market and government planning--I don't distinguish between the two as much as other people do).
Architecturally, I would like to think that all 7 billion people would benefit from more intelligent design. That will be a harder task to achieve than I want to admit. And as far as population density goes, this is a picture of Siberia. About two people per square mile. Lots of sublime empty there.
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