Cities

Watch: London’s “rolling bridge”
London’s unique Cody Dock “rolling bridge” can be moved by hand winches.
Nature-based solutions are cleaning up cities
Nature-based solutions can be radical — think covering a highway with a park — but offer meaningful ways to address pollution.
Open-source map could empower pedestrians in car-filled cities
Most cities don’t map their own pedestrian networks. Now, researchers have built the first open-source tool to let planners do just that.
Cities are using beets to deice streets this winter
Luminescent materials could cool our cities and light the streets