That's about a quarter the size of Oklahoma's state budget.
Results from the latest Capital Bikeshare member survey in Washington, D.C.
At any given time, 30 percent of Americans report "not feeling close to people."
8 of the country's 15 fastest-growing cities are in Texas.
A collection of the city's subway maps since 1935.
Rejoice, America: Researchers say the nation is equipped to produce "serious amounts" of algae biofuel.
Has a speeding chunk of space rock smashed through your roof? Perhaps it's shown on this intriguing map of meteorite landings.
The smell of your neighborhood pizzeria and the feel of a cracked sidewalk may be more important than researchers previously believed.
Zhang Yue's dream to reinvent urban life.
Many of the highest percentages of gay couples raising children are found in states that ban gay marriage.
After boasting that she had knocked over a cyclist in her car, Way has become international news.
The country's almost laboratory-like conditions are a perfect place to measure the effect of human urban development on temperature.
Arresting images of the ordinary amid devastating war.
NASA announces the winners of its International Space Apps Challenge.
How has one of America's biggest cities resisted the medical establishment on fluoridation?
The Jeremiah Program knows what single moms need to finish college: housing and child care.
Freight is crippling metro areas, but it's rarely part of city planning.
Low voter turnout is something of a trend in America's second largest city.
Hey, is that soybean field looking at me?