A rare moment of celebration in Cairo.
Photos from the Tennessee town of Oak Ridge, where thousands of workers and their families lived while constructing the atom bomb.
Ideas for rules that balance a building’s historic character with the need for green energy.
New research finds the "bystander effect" can be offset by the presence of public self-awareness.
Our car-dependent lifestyle has led to a dramatic rise in obesity-related illnesses. But we can do something about it.
No, we have not reached the end of segregation. Something much more complicated is going on.
A new economic and social order is a double-edged sword: it unleashes incredible energies, but it also causes tremendous hardships.
The locations where Facebook users check-in the most.
Urban landmarks the world over, all squeezed into one work of art.
Why Prudential thought it could save America's downtowns through its own decentralization.
A Japanese company is marketing an English version of "Drop," a horror story by The Ring author that's printed on TP.
A winter solstice celebration gets Bolivia's Aymara Indians up before dawn to salute the first rays.
Travel writer Taras Grescoe on the joys of public transportation.
This short film is one of the few records of life in the city.
Striking images and video of the city in the midst of a rebirth.
P.D. Smith's engaging and illuminating new book on the history, evolution and intricacies of cities.
Researchers at the City College of New York think they've found a way to use coffee to neutralize a city's most unpleasant odor.
Obesity rates have skyrocketed in China over the last generation, at the same time that its cities have exploded. A group of researchers is now trying to pin down the relationship between the two.
One less thing to worry about as your face melts off during today's record-breaking heat wave.