Design
An Addictive Tool Tracks the Explosive Expansion of the World's Megacities
Examining swelling urban borders over the past 100 years.
To get a clear picture of the Big Banglike expansion of the world's largest metropolises, look no further than "The Age of Megacities," an engaging Esri project that shows urban borders swelling over the last 100 years.
As noted on the wonderful site Maps Mania, the Esri team has selected 10 international cities to show the wind-whistling clip of modern development. For instance, here's the urban extent of Chicago in 1915: