The Rube Goldbergian "mobile foundry" smelts aluminum cans into helpful objects for your butt.
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.
The birthplace of the car-free day saw 296 deaths on city streets last year.
A man was jailed for painting a crosswalk at a dangerous intersection. When he got back to his neighborhood, he was hailed as a hero.
Originally hailed as a death trap, the jungle gym has now become a beloved part of Moscow.
Just wait til you see the PPPlanter on a street corner near you.
Not much, according to one urban hactivist, as long as you've got some white tape and shopping carts.
A Toronto photographer tracked the same addresses over four decades to tell his city's changing story.
A sociologist and an urban historian document the community activism reshaping some of the cities hardest hit by the great recession.