You might reasonably think that the number of bicycle crashes would skyrocket as more people take to the streets on two wheels. It's a fine, common-sense assumption -- that happens to be wrong.
Today, some people look at the decision to halt the Cincinnati subway in 1925 as fatally short-sighted. "If they had finished this system, we may have actually held on to some of our businesses that have left. Cincinnati downtown may have been a viable institution."
Will having kids play with LEGO buses and trams (rather than Hot Wheels) foster the next generation of public-transit advocates?
Chris Williams of Iowa U. has cooked up a bio-oil from plants that can replace the asphalt glue that holds our pavement together -- Bioasphalt.
Gov. Chris Christie's refusal to invest in a piece of major public transit infrastructure is another blow against a modernized transportation system.
After opening several new lines this year, it's got 282 stations and 420 km (261 mi) of lines, compared to 408 km in London and 368 km in New York.
Mayor Michael Bloomberg has an ambitious plan to keep raw sewage out of the city's waterways.
The creation of a modern rail network in the United States is becoming just another political football.
Jeanne Park of PBS's Need to Know speaks with Mau about his love of the suburbs, cup holders, and the challenge of rebranding climate change.