Philadelphia

In the Climate Change Economy, It's About Efficiency, Not Just Growth

North American cities are producing substantially less wealth per ton of greenhouse gas emissions than their European counterparts.

Don't Worry, Philadelphia Isn't Actually Bubbling With Radioactive Waste

At least, that's not what's going on in this widely circulated photo of a sinkhole filled with bright green ooze.

6 More U.S. Counties Are Now Majority-Minority

Welcome to your demographic future, Charlotte, North Carolina.

Inspector of Collapsed Philadelphia Building Committed Suicide

He had visited the Market Street demolition site several times in the last few months and had declared it safe.

At Least 6 People Were Killed in the Philadelphia Building Collapse

A partially demolished building fell onto a Salvation Army thrift store, trapping more than a dozen people inside.

Philadelphia Is Ground Zero in the Fight to Save Catholic Schools

A peek at the archdiocese's unprecedented push to bring back its struggling schools.

Rescuers Dig Through Rubble After 2 Buildings Collapse in Philadelphia

A four-story structure undergoing demolition collapsed onto a thrift store in Center City this morning.

Why You May Not Be Seeing Many 17-Year Brood II Cicadas

Where's the dang swarm, already?

Where the Cicadas Are Now Emerging

People have seen bugs belonging to Brood II, aka the mega-prolific 17-year cicada, from Georgia up to New York.

Creative Skyscraper Use of the Day: A Giant Game of Pong

The world's largest game of pong, played on Philadelphia Cira Center's massive glass facade.

After the School Closings, the Real Estate Mess

As school districts downsize, they leave behind shuttered buildings. Finding new uses for them can be difficult, to say the least.

America's Most Post-Industrial Metros

The cities that lead America's transition from a goods-producing to service economy.

15 Ideas for Making Amtrak's Northeast Corridor Better

The federal government has prepared a short list that includes 220 mph trains.

Why Are There Still So Many Train Stations Named Penn Station?

The Pennsylvania Railroad isn't coming through that tunnel — so how come we keep going through its doors?

The Strange Decline of the Philly Accent

Linguists are still trying to understand the surprising evolution of how Philadelphians speak.

Class-Divided Cities: Philadelphia Edition

The ninth in our series exploring the class divides across America's largest cities and metros.

Eyesore Solution of the Day: Vegetation Decorations for Construction Fences

Planters cover up offensive projects.

Providence Wins Mayors Challenge Prize for Early Childhood Project

The $9 million Bloomberg Philanthropies contest also awards innovations from Chicago, Houston, Philadelphia and Santa Monica.

An Imprecise Geography of Obnoxious Snowstorm Nicknames

From Snowpocalypse to Snowquester.