On the 209th birthday of the first steam engine trip, how the Civil War impeded, then accelerated, the progress of America's trains.
A new report finds that two-thirds of newly developed units are too expensive for local residents.
That foreign beer you're drinking may not be that exotic.
People in Napa, California, sure are satisfied. And the saddest places all swear too much.
Not all urban areas are bastions of blue. Population, density and education all play a role.
In Austin, maps are color-coded by comfort level rather than traffic-engineering standards.
Would you dissolve in fire or would your clothes simply ignite?
All the tweets in the world glimmer in this entrancing visualization of real-time tweets.
Complete with in-game music.
Depending on your capacity for innuendo, of course.
Thick trails of lung-damaging nitrogen dioxide stretch from ports in China, India and the Middle East, and fume off of coastal cities worldwide.
Some cities, you just can't reach.
Heat maps from Square highlight how concentrated the benefits from the big game really are.
What happens to a community with no "digital shadow" on the web?
The weather plays a big role.
One more American divide to examine, ahead of Super Bowl XLVII.
Hobbyist mapmaker Andrew Lynch is fascinated by what nearly was.
An unusual map shows the city's still struggling with a foreclosure rate of epic proportions.
How transit access changes the perception of distance and accessibility of resources in a city.