The Louvre Museum especially is overrun by the vermin this year, but 'Ratatouille' may have endeared them to visitors.
A judge's ruling over renovations to La Samaritaine has the city wondering about its future.
Road traffic dropped by 18 percent, and PM-10 pollution dropped by 6 percent.
A rash of crimes against East Asian tourists has forced the French capital to get creative.
The ride-hailing company faces legal challenges across the continent.
A new photo project dreams up a Paris Metro commute for lions, giraffes, and the whole gang.
New animations show centuries of expansion in three global cities.
This week's Chicago L train crash highlights an area of technology where U.S. transit lags behind.
A hacked traffic light honks at drivers the instant the signal turns green.
It must sting when the world's biggest smog-hole is calling your air polluted.
The city banned half of all cars from the roads on Monday. Will it be enough?
The entire Paris region's public transportation system will be free this weekend in an effort to stem the early spring smog.
Transit "branding," from a system's logos to its stations, can have a real impact on riders.
Can one of the world's most famous historic churches hold up to modern-day lighting?
Don't even think about wearing a hoodie and pajamas to the fashion-themed "épicerie."
Swimming pools in the Seine, restaurants in old metro stations, and more.
Sniffing around a new Bay Area exhibit devoted to the smells of places from the modern day to the Middle Ages.
Ideas for putting the city's "ghost stations" to good use.
But balancing quality and cost is no easy task.