A round-up of the buildings in use during the London games.
In the end, the Olympics have helped the city achieve in a decade what might otherwise have taken two or three.
The head of the environmental program at Bloomberg Philanthropies makes the case in this compelling video.
How 920 streetlights in Doha launched a years-long legal battle between industrial designers and the State of Qatar.
Photographing the complex legacies of the war-torn host of the 1984 Winter Olympics.
A new study claims to "contradict" the premise that density discourages driving — but does it?
With gang members openly posting about their plans to commit violent acts on Facebook and YouTube, police departments nationwide find increased challenges and unique advantages.
London's most athletic vermin run the torch in this charming animation.
Done right, the Olympics can increase a city's public spaces and public transportation use.
The Indian capital's heavy traffic is suffocating its bus system.
The athletic apparel company gives other Londons publicity as it continues its tradition of ambush ads.
Don't get too excited about a seemingly reasonable new policy on citizens photographing police officers. The city was forced to do it, and they're not happy about it.
Also, medical-marijuana dispensaries are outlawed in L.A., chained-up pooches in Virginia.
A station-by-station map of poverty, crowded housing and employment.
The Dutch are in dead last, and one program stands above the rest.
The former Prime Minister, now an Olympics legacy consultant, advises patience when it comes to evaluating the impact of the Games.
Writer Rana Jarbou is blogging her experiences wearing the niqab in Riyadh.
Jerry Brown is taking a blunt approach to a controversial water plan.
Traffic Psychologists in Sao Paolo try to cheer up the city's drivers with signs, high fives, and physical affection.