Cities

The 9 billion-person question: What kind of cities will we build?

As humanity rushes into urban areas, the future of life on Earth hangs in the balance, says environmental historian Jon Christensen. Can we weave natural ecosystems into our human habitat, and vice versa?

A solar-powered cell phone charging station inspired by Occupy Wall Street

Tommy Mitchell wasn’t an Occupier, but when he visited Occupy Wall Street, he found out that OWSers were charging their cell phones at a hot dog vendor’s gas-guzzling generator, The New York Times reports. “I was like, ‘Well that’s awful,’” …

Here’s what Pittsburgh looked like before smoke control

Vintage photos of Pittsburgh, from before it passed a smoke-control ordinance in 1941, are so hazy that some of them look like they've been hit with some kind of artsy-grunge Instagram filter.

Flash mob proves conclusively that cars are the most annoying ever

Flash mob factory Improv Everywhere stages weird, transcendent little moments of cooperation, synchronicity, and pantslessness (they’re the ones behind the No-Pants Subway Ride). But their latest effort, the Car Alarm Symphony, doesn’t do much besides prove that parking lots, already …

The best subway map tattoos

There are people who like public transportation, and then there are people who want to rub public transportation all over their body parts — or at least get it permanently inked on them. Here are some of our favorite transit-map …

NYC learns to heart bicycles

Just over a year ago, New York's transportation commissioner was raked over the coals for her romance with bikes. Now, it seems the city has fallen for them too.

Detroit turns a freeway into a river

No, it wasn't an artistic statement about transportation and modern society. It was a busted water main -- just the latest in a city and state where infrastructure has been neglected for far too long.

Parks and recreation: The best American cities for green spaces

ParkScore measures and ranks the park systems of the country’s 40 largest cities. How does your hometown stack up?

Stray dog follows bikes for 1,000 miles (and beats most of the cyclists)

This adorable terrier-looking pup was hanging around a group of cyclists when they took a break, so one of them gave her chicken. Well, you know what happens when you give a dog chicken: She never leaves your side again, …