The cycling boom is reshaping how cities plan their streets
Painted lanes were the start. Now planners are redesigning whole neighbourhoods around the bike.
The megacity census: who really lives in the world’s biggest cities
Official counts miss millions. A new survey tries to find them.
After midnight: how cities are rethinking the night economy
Mayors are appointing night-time champions to keep cities open after dark.
The rooftop gardens cooling Europe’s old towns
Green roofs are turning hot terraces into the coolest streets in town.