Think we’re overrunning the planet? Too many people, too little space to fit them in? Guess what—you’re wrong.
Check out this amazing info-graphic, showing how large a city would need to be, if all of the Earth’s population was living at that one city. It shows a number of scenarios, depending on the population densities of various present-day cities.
(Spoiler: The largest area on the info-graphic is less than the area of the USA.)
Link via Cafe Hayek.