Rules for protecting the resources we love.
From a Lady Liberty comb to 'I Heart London' nail clippers.
A new website enables residents to identify problems in Beijing's pedestrian and bicycle infrastructure.
A county-by-county breakdown of the U.S. creative class.
When oil becomes as valuable as gold, will we wear it like gold?
The Games have a lot of naysayers. But Vancouver's former planning chief says the 2010 games made his city stronger.
That's the number of U.S. traffic deaths in the first three months of this year, up 13.5 percent from the first quarter of last year.
One of the city's districts has made street art a central part of its identity.
The Hiriko electric vehicle is so cute you might just want to pick it up and carry it home.
Relatively high temperatures cause train problems and worsen ticket queues.
One company will offer Olympics visitors ATMs equipped with the East London dialect.
The worst culprits aren't necessarily the ones you'd expect.
Scott Crawford created a model of his ideal Jackson, Mississippi - a pedestrian-friendly spot with lots of bike lanes and solar panels.
Don't count on gaining much from your moment in the sporting sun.
Side-by-side photos of the city then and now.
Designers create a "place to be seen" in Toronto.
GPS-enabled apps have changed the going-out culture in the city.
Smart design will reduce heat energy use, electricity use and water consumption.