The Irish capital is pockmarked with empty parcels. With tough new property laws planned for this year, that could change.
Five image pairs — and simple rules — courtesy of New York City.
How do we make over places where driving remains essential?
The perception that biking is unsafe remains a major stumbling block in getting more people to ride.
The number of students without a home has hit a record high, according to new data from the Department of Education.
The state doubled its light rail line in just 7 years, with the broad support of users and non-users alike.
The city's largest theaters are thriving. But does success come at a cost?
Educating an inmate reduces their odds of recidivism by 43 percent.
It would address a major barrier to the use of EVs in big cities.
Bike-share is key.
U.S. households use more energy for A/C than the rest of the world combined. But that's changing, fast.
Bruce Katz and Jennifer Bradley are on a mission to get cities and metros talking to each other.
Could better software change how police departments find fugitives?
France looks set to implement a series of groundbreaking laws designed to induce landlords to rent to a wider variety of income levels.
All else being equal, riders prefer good service to any particular mode.
Simplifying both the message and the process has worked wonders for San Francisco.
This widespread movement has clear echoes in developing megacities everywhere.
How we can reduce crime, increase economic mobility, boost college graduation rates, and give communities more tax revenue, all at the same time.
Pasadena officials are giving people $220 to buy folding bikes in an effort to solve the "last mile" transportation problem.
New research explains why racial segregation hasn't gone away on its own.