Seven out of every ten humans on earth live in a city. What realities does this accelerated urbanization conceal? Gigantic megaloplises are growing, rural areas vanishing, the built world both sprawling and soaring skyward all at once, new forms of segregation and inequality emerging, etc. A major symptom of our entrance into the Anthropocene Era, the spread of urban areas contributes to global warming, destroys biodiversity, and leaves us highly vulnerable to climate change.