The youth get a housing deal, the elderly get companionship—it’s win-win.
Two scientists believe their method of planting cypress and tupelo trees—in special rodent-resistant pods—can revive the region’s disappearing marshes.
COP21’s success hinges on an agreement between the haves and have-nots.
Dispatches from the front lines of urban innovation
An important step toward visibility for some of Brazil’s most important—but unappreciated—workers.
Cold, dark winter afternoons are horrible.
They may actually work against city goals to encourage more riding.
A case study in local infrastructure, racial inequality, and civic activism.
Reflective paint is part of the latest plan to save the animals’ lives.