Good ideas that get cities results are worth replicating. Sounds simple enough. But when it comes to scaling up and investing in sustainable urban solutions, it’s complicated. With more than 400 cities making commitments to climate action through the Compact ...

Last December, Beijing’s city government issued a “red alert” for smog levels—the highest possible designation. Schools and construction sites closed, traffic was restricted, and air pollution reached 10 times the World Health Organization’s recommended limit. Meanwhile, residents in neighboring cities ...

While the words “forests” and “cities” don’t traditionally go hand in hand, urban forestry has started to bridge that gap. While some cities have minimal tree cover due to inadequate soil or a lack of space, others are nearly half ...

Lighting represents about 15 percent of global power consumption and 5 percent of worldwide greenhouse gas (GHG) emissions. Street lighting alone represents about 3 percent of world electricity consumption. Extensive programs that replace obsolete street lighting systems—incandescent, mercury vapor, and ...

From February 24 – 26, 2016 African ministers and stakeholder representatives from numerous civil society organizations gathered in Abuja, Nigeria to discuss African priorities for Habitat III, the U. N.’s 20-year urbanization conference that takes place in October. At the end ...

With rising air pollution to costly traffic congestion and increasingly burdened public finances, cities need to transition onto a sustainable path towards healthy, productive and equitable urban communities. To thrive in the coming urban century, cities will need to innovate ...