The footprint of the world’s largest metros

A comparison of the built-up area of 129 'extended metros' that represent 35% of the world's urban population: Measuring the Human Urban Footprint (by LSE)

Take a look at the striking difference between Hong Kong and Atlanta. Pop density in Hong Kong is almost 24 times bigger than in Atlanta! Say it '24'.

Hong Kong (Pop.  7,069,378 - Density  25,933 pp/km²)

[Image Credit: LSE]

Atlanta (Pop. 7,506,267 - Density 1,090 pp/km²)

[Image Credit: LSE]