Sommer Mathis

The Future of GPS Data in Smarter Planning

Researchers in Beijing are working with taxi drivers to identify the sources, not just the locations, of congestion

Sub City: If Only All Commutes Were This Serene

A pair of New York-based filmmakers marvel in, and just above, the underground

Welcome to The Atlantic Cities

What you should—and shouldn't—expect from The Atlantic's newest website

State of Play: Playground Infrastructure in 20 Major U.S. Cities

Which major U.S. cities provide the best, and worst, mix of playgrounds for their youngest residents?

Detroit: City on the Move

A 1965 promotional film for Detroit reminds us how far the city fell behind