Aerial view of Bogotá, Colombia, host city for WRI’s January 2025 convening on air quality and electric mobility. Photo: ...

Oslo’s City Ring Road after multimodal safety improvements. Photo courtesy of City of Oslo, Norway In 2015, the City of Oslo, Norway, made a commitment after years of rising transportation injuries to ...

People sit outside in Bogotá, Colombia. WRI analysis shows the city has the potential to increase its tree cover by 244%.

Air pollution is one of the most serious environmental threats to human health worldwide. In 2021, it caused 8.1 million deaths, an increase from 7 million recorded in previous studies. In Africa, ...

In San Francisco, parks, squares and alleys transform into playgrounds on car-free days, fostering a sense of togetherness and belonging. Photo: Patrick Race As cities become more congested, traffic ...

Newly planted trees line the Piassa-Mexico-Sarbet-Gotera-Wollo Sefer corridor in Addis Ababa, Ethiopia. Implemented during the first phase of the city’s corridor development project, the trees provide ...

Despite accounting for less than 3% of global terrestrial area, cities have had an outsized impact on our approach to planetary boundaries, affecting biodiversity and consumption of materials and ...

This series, supported by the Volvo Research and Educational Foundations, discusses walking and cycling in cities with a special focus on low- and middle-income countries. Many cities have streets ...

Our impressions of a city are formed mainly by the quality of public spaces. If they are not pleasant and preserved, or if they transmit a sense of insecurity, we will seldom return. Good planning of ...

Walking is the oldest, most democratic way to get around. But as urban areas have become more sprawled, walking has slowly been suffocated by other modes of transport that are less healthy for both ...

Nossa Cidade (“Our City”), from TheCityFix Brasil, explores critical questions for building more sustainable cities. Every month features a new theme. Leaning on the expertise of researchers and ...

Instructor Cliff Cochran and a high school intern working in the Cherokee Boys Club garage. Photo: Stephanie Ly/WRI Summer in Cherokee, North Carolina means many things. Hot, humid afternoons. Days ...