A new chart details what we save when we take the train or bus.
How America's biggest metro areas stack up.
Growing up, I couldn't wait to get out of Ann Arbor. But years of big city living has given me new appreciation for my hometown.
Once Apple releases its new mapping software, you'll only be able to find the bus if you live in a city with open data.
Villagers whistle long, elaborate songs to pass on information long-distance.
Use dog poop for fuel! Have a sustainable rap contest!
Dozens of G4S staff failed to turn up for guard duty at a Manchester hotel hosting Olympic athletes.
Behold, the ultimate in green fashion: a jacket that identifies and cleanses foul air.
City streets are bursting with a gutsy, high-low mash up of street food and haute cuisine, old country flavors and new-fangled cooking techniques.
A new ranking of international infrastructure projects leaves out some key efforts.
Pictures of sleeping in strange places.
With The Dark Knight Rises days away, you can brush up on your Gotham geography.
A new measurement - based on satellite images - highlights cities' key role in economic development.
Over 235,000 visitors will arrive in Heathrow today, putting the city's specially designed transportation network to the test.
A break from the bustle of the city can do your mind good, recent research shows.
Where are the most tolerant metro areas?
One man's trip across the entire system from end to end to end in one shot.
Some whimsical responses to a serious question.
The Japanese-designed gadget plays the offending speaker's words back to them in a highly irritating way.