A ground-breaking new report finds that air pollution – not any one contaminant – is the "leading environmental cause of cancer deaths."
Bike infrastructure has become a hot amenity that can help municipalities draw new residents.
Officials recently decided to prohibit people form using bicycles on nearly 200 streets in the central city during the day.
Joe Lhota's "white woman clutching a subway pole with a black man in the background" moment.
In the 1970s, the Dutch launched an effort to "stop the child murder" by drivers. Could the U.S. do the same?
And how it got that way.
A new Tumblr documents NYPD vehicles obstructing the city's much-vaunted dedicated bike infrastructure.
"You're going to have accidents," says New York Police Commissioner Ray Kelly.
Brutal honesty from New York City's planning director.
Lessons from the Great Flood of 1993.
The Montréal company that supplies bicycles and docking stations for major U.S. cities is suffering from major cash flow issues.
A stabbing attack in New York's Riverside Park acts as a reminder about the way cities really work.
When the question is framed in terms of safety, there's plenty of agreement.
Baltimore's neediest students often struggle to find transportation and afford things like uniforms.
And educators need to figure out ways to encourage social mixing opportunities among students.
One of New York City's busiest streets doesn't have a full bike lane. The other night, some cycling advocates took matters into their own hands.
Brooklyn CSA+D connects people interested in collecting art at a reasonable price point with artists who want their work to find a home.
When I was growing up, the threat of nuclear attack was always in the background. Now it's mass shootings.
Unstructured time allows children to develop creativity and empathy. But too often, it's missing from the schedule.