Agglomeration Economies

New York Subway

Research: Transit Times Determine Social Networks

A social network analysis, touted as the largest ever, reveals the importance of mobility for social connections.

July 16, 2019 - Slate

New York Subway

Regardless of Cost, New York Must Rehabilitate its Crown Jewel: the Subway

Depending on what's included, the cost to rebuild the ailing 665-mile system could be $111 billion, but the city's future depends on it. A feature-length New York Times Magazine piece looks at its history and suggests ways to finance rebuilding.

January 12, 2018 - The New York Times Magazine

Commuter Traffic

Congestion Pricing Requires a Careful Balance

Congestion pricing is an economic tool for a difficult, complicated problem, and must be calculated carefully to avoid unintended consequences.

August 1, 2016 - Neighborhood Effects

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.

Top Books

An annual review of books related to planning.

Top Schools

The definitive ranking of graduate planning programs.

100 Most Influential Urbanists

The who's who of urbanism, according to Planetizen readers.

Urban Planning Creators You Should Know

A short list of voices on social, video, and podcasting platforms.