To its credit, the animal behaved better than many public-transit riders.
A bitter feud between two men has sent the price of trees in New York City sky-high.
Colder than the frost on a champagne glass!
The energy disparity between Pyongyang and its neighbors is clearer than ever in this awesome NASA satellite shot.
Please don't let "Human Kopi Luwak" become a thing.
Two artists cover a Montmartre wall with more than 200 expressions of adoration.
A government tax incentive program has made cycles affordable for thousands.
Beaches are littered with a trail of rotting cephalopods stretching for 11 miles.
Russian adventurers dressed like construction workers to reach the ice-covered pinnacle of Mercury City, which is taller than London's Shard.
Cities have largely given up on pedestrian scrambles — but some are bringing them back.
B2 Bklyn breaks ground this morning at Atlantic Yards. A lot is riding on whether it works.
There's a major structural problem built into how cities spend their money. Here's what we can do about it.
The French capital's third tramway extension in a month.
The Battle of the Commute rages on, as this painful-to-watch footage shows.
France's Nantes has a powerful plan to cut carbon, eliminate cars, and redevelop the city's heart.
Americans moved less than ever between 2005 and 2010 — but no one seems to know why.
On Sunday, President Obama pledged to "use whatever power this office holds" to prevent another mass shooting.
From residences to gardens to installations, a look at the most compelling works of the year.
Monday brings an awkward mix of grief and preparation.