Whether you can safely help a stranger during a crisis largely depends on where you live.
Several cities are trying out new ways of encouraging low-income residents to sign up.
An impressive-looking system might dump even more snow Thursday into Friday.
The people and ideas reshaping urban life
At the Rust Belt Market in Ferndale, the maker movement is remixing Detroit's industrial heritage.
Many people in the U.S. carpool, walk, and use public transit to get to work—but most are still hacking traffic in a car, all alone.
Africa is the world's most rapidly urbanizing continent. Transit in cities will have to adapt to encourage walkability and prevent isolating sprawl.
What recent stories about where Americans want to live get wrong.
Inside a city that works hard at keeping the jungle in "urban jungle."