Love it or hate it, the ‘Acela Corridor’ has developed a widely recognized identity thanks to the trains that link it together.

One more reason not to drive into midtown Manhattan: Soon it will cost an extra $15 as New York City launches its long-debated congestion pricing system.

A new study shows how front yards can serve as windows into the inner lives of their residents – and their feelings about their home, neighborhood and city.

Mapping where water once flowed is important for managing flood risk today in Detroit and elsewhere.

Female mosquitoes don’t want to lay their eggs alone, but they don’t want sites that are too crowded either. Understanding what guides their choice could inform new control strategies.

China has a lot of vacant retail space, including many underused shopping malls. An urban policy scholar describes how the Chinese are rethinking what the mall is for.

This isn’t the first time that US authorities have criminalized civil disobedience or framed grassroots organizing as a conspiracy.

Whether you call them rotaries, traffic circles or roundabouts, they offer a safer alternative to the four-way stop. But the modern roundabout has been decades in the making.

A group of academics look at the global evidence to examine the potential impact of safe injection sites in Philadelphia and the US.

A group of academics look at the global evidence to examine the potential impact of safe injection sites in Philadelphia and the US.