#population

The energy consumption of a city scales with its population raised to the three-quarters power.

From Scale: The Universal Laws of Life and Death in Organisms, Cities and Companies by Geoffrey West

The greater the number of individuals, the greater is the chance of variation.

From The Origin of Species by Charles Darwin

Ninety percent of the world’s population has a body in cyberspace.

From The Neuromancer by William Gibson

To understand a city, one must understand the movement of its people.

From The Ghost Map by Steven Johnson