Philadelphia

Courtesy Tim Simmons

A Glimpse of Nature, Via Downtown Billboards

A photo project in Los Angeles and Philadelphia implants images of nature on urban billboards and buildings

Reuters

Another Reason to Stop Building New Homes: Job Creation

Repairing existing residential buildings produces about 50 percent more jobs than building new ones

California High-Speed Rail Authority

History Gives Hope to California High-Speed Rail

What America's first-generation railroad system says about its next one

Brian Snyder / Reuters

Could Building Thousands of Parks Fix the Real Estate Market?

A new initiative seeks to revive empty commercial land as public space

Where the 1% Live

The richest Americans are gathered in a handful of metropolitan areas

Flickr user: marco_ask under a Creative Commons Licence

The Best and Worst of the World's Central Plazas and Squares

A pair of slideshows illuminating what makes a public gathering space work and what doesn't

Flickr user: gwen, under a Creative Commons License

Why Did Some Streetcars Survive When Most Didn't?

Streetcars are making a comeback across the country, but in New Orleans, they never went away

Flickr/SanFranAnnie

The Trouble With Youth Curfews

Rules targeting youths often don't produce public safety results

Where Homeowners Are Underwater

Obama has a new plan to help owners refinance their mortgages, but some places will benefit more than others

Courtesy Code for America

Techies Embed in City Hall

Code for America provides fellows to cities to tackle local problems

Flickr user Bikoy, licensed under Creative Commons

Why Walkable Cities Aren't Always the Ones You'd Think

Factors like bad weather and long commutes don't make a place less walkable

Craig Keller/Chicago's I-Go

Car-Sharing for Less

By operating as nonprofits, smaller shared vehicle services are expanding their reach

2011 Major League Baseball Regular Season: Attendance by Team

Philadelphia tops the regular season attendance list for the first time in franchise history

Courtesy of the Community Design Collaborative

Redeveloping Former Industrial Sites Doesn't Mean Giving Up on Industry

Brownfield projects in Philadelphia, Cleveland, and Toledo aim to reimagine what manufacturing means in America

Flickr user gsgeorge, licensed under Creative Commons

Descendants of the High Line

Four urban elevated railroad parks in progress

2010 File photo Associated Press/The Philadelphia Inquirer

Are Violent 'Flash Mobs' Really a Trend?

After two summers in a row of disturbing group violence in cities like Chicago and Philadelphia, authorities look at the intersection of technology, poverty, and race

Flickr user: DaveFayram, Creative Commons

Is Bicycle Commuting Really Catching On? And if So, Where?

A survey of 55 major U.S. cities shows big gains in many places, but plenty of regional variation

University of Colorado

America's 20 Most Economically Vibrant College Towns

With better jobs markets and high levels of state funding, these U.S. cities offer a lot more than just a place to go to school