The perception that a city has reached its maximum population and nobody else should be allowed in, or nothing should be allowed to change, is limiting the potential of our cities and increasing housing inequality.

Emily Badger of The Washington Post's Wonkblog tackles the question of how we determine when a city just can't take any more people by comparing our densest cities with those around the world, and discovering we're not necessarily as dense as we think. Further, an increase in population in one area results in economic and environmental benefits.
"Put more and more workers in one place, meanwhile, and you also get buzzing hubs like New York's Garment District or Boston's biotech corridor, where people working on the same problems bump into each other and share ideas and suppliers and become more productive. Put more people in a city, and the economy grows. It's the opposite of diminishing returns. The environmental costs, per person, can actually improve. In drought-stricken California, some of the lowest water consumption per capita is in San Francisco."
Badger notes that the use of environmental laws by NIMBYs, particularly in California, has led to greater economic inequality. The cost of housing has continued to rise as residents have blocked new housing, thereby limiting the supply for newcomers and stopping the natural evolution of our cities.
FULL STORY: There is no such thing as a city that has run out of room

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

Canada vs. Kamala: Whose Liberal Housing Platform Comes Out on Top?
As Canada votes for a new Prime Minister, what can America learn from the leading liberal candidate of its neighbor to the north?

The Five Most-Changed American Cities
A ranking of population change, home values, and jobs highlights the nation’s most dynamic and most stagnant regions.

San Diego Adopts First Mobility Master Plan
The plan provides a comprehensive framework for making San Diego’s transportation network more multimodal, accessible, and sustainable.

Housing, Supportive Service Providers Brace for Federal Cuts
Organizations that provide housing assistance are tightening their purse strings and making plans for maintaining operations if federal funding dries up.

Op-Ed: Why an Effective Passenger Rail Network Needs Government Involvement
An outdated rail network that privileges freight won’t be fixed by privatizing Amtrak.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
Village of Glen Ellyn
Central Transportation Planning Staff/Boston Region MPO
Heyer Gruel & Associates PA
Institute for Housing and Urban Development Studies (IHS)
City of Grandview
Harvard GSD Executive Education
Regional Transportation Commission of Southern Nevada
Toledo-Lucas County Plan Commissions