December 18, 2013, 7am PST
Justin Davidson ruminates on the great strides Janette Sadik-Khan and New York's Department of Transportation have made in reforming the city's streets. As much as they've accomplished, the transformation remains a work in progress.
July 8, 2013, 5am PDT
A new study suggests that density, mixed-use neighborhoods, short city blocks, and, crucially, walkability foment political and social activism, reports Richard Florida.