Jerry Adler examines the emerging field of “quantitative urbanism,” which aims to use mathematical formulas to unveil and explain the universal properties shared by cities.
"Cities are particular: You would never mistake a favela in Rio de Janeiro for downtown Los Angeles. They are shaped by their histories and accidents of geography and climate," says Adler. "But cities are also, at a deep level, universal: the products of social, economic and physical principles that transcend space and time. A new science—so new it doesn’t have its own journal, or even an agreed-upon name—is exploring these laws. We will call it 'quantitative urbanism.' It’s an effort to reduce to mathematical formulas the chaotic, exuberant, extravagant nature of one of humanity’s oldest and most important inventions, the city."
“Give me the size of a city in the United States and I can tell you how many police it has, how many patents, how many AIDS cases,” says [Geoffrey West, one of the leaders in the field], “just as you can calculate the life span of a mammal from its body mass.”
FULL STORY: Life in the City Is Essentially One Giant Math Problem

Alabama: Trump Terminates Settlements for Black Communities Harmed By Raw Sewage
Trump deemed the landmark civil rights agreement “illegal DEI and environmental justice policy.”

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

How Atlanta Built 7,000 Housing Units in 3 Years
The city’s comprehensive, neighborhood-focused housing strategy focuses on identifying properties and land that can be repurposed for housing and encouraging development in underserved neighborhoods.

In Both Crashes and Crime, Public Transportation is Far Safer than Driving
Contrary to popular assumptions, public transportation has far lower crash and crime rates than automobile travel. For safer communities, improve and encourage transit travel.

Report: Zoning Reforms Should Complement Nashville’s Ambitious Transit Plan
Without reform, restrictive zoning codes will limit the impact of the city’s planned transit expansion and could exclude some of the residents who depend on transit the most.

Judge Orders Release of Frozen IRA, IIJA Funding
The decision is a victory for environmental groups who charged that freezing funds for critical infrastructure and disaster response programs caused “real and irreparable harm” to communities.
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