Pudding:

This is a story about how to perceive the population of cities.

From my perspective (albeit a US-centric one), it was eye-opening to see how the world’s population is so unevenly distributed.

What stands out is each city’s form, a unique mountain that might be like the steep peaks of lower Manhattan or the sprawling hills of suburban Atlanta. When I first saw a city in 3D, I had a feel for its population size that I had never experienced before.

This is a mind blowing way of visualizing population and density. Thanks to Tim Harford for the link.