They're especially bright in the suburbs, says NASA.
It may struggle to keep up with passenger demand if it doesn't.
Houston's Neighborhood Centers has spent years addressing this hidden problem—which will spread throughout the U.S.
A status report on proposed lines in California, Texas, and the Northeast.
What we've learned from our 9-month series on tomorrow's urban mobility.
An analysis of once-rejected, later-constructed routes in Los Angeles, Atlanta, and Houston.
Ten counties are responsible for more than a quarter of all U.S. executions, but one far surpasses all others.
It may sound obvious, but it's a big problem in cities across the country.
In every urban demographic group in our State of City poll, the majority commuted by car.
Scientists working in smoggy Houston say planting a 1.5-square-mile forest would make the air more breathable.
Texas Central Railway intends to build a Houston-Dallas line with private money.
By eliminating route redundancies and emphasizing ridership, the city thinks it can get a better trip at the same price.
But they're not alone: roughly half the nation lives with unhealthy concentrations of ozone or particulate pollution.
New York and L.A. are losing more Americans than they're gaining, but the flood of immigrants more than makes up for it.
In a city where nine in ten drive to work, the answer could reshape the future.
The population of cities with more than a million people jumped 3.2 percent, much better than the 2.4 percent for the U.S. overall.
Questioning the numbers behind the new ridership "record."
How U.S. cities stack up economically worldwide.
A complicated geography of churches, produce, and beer.