ei urbanization action
-
Jacqueline Klopp Helps Public Transit to Grow Sustainably
She’s finding new ways collect and share data in rapidly growing cities — and the results will help to build a healthier future for the entire planet.
-
Planting a Park on the Cross-Bronx Expressway Would Save Money and Lives
Public health researchers run the numbers on creating a park on top of a section of the highway, finding it a worthwhile investment for community health.
-
Cleaning Up New York City’s Waters and Beyond: Q&A with Kartik Chandran
Kartik Chandran, an environmental engineer at Columbia, will discuss some of his urban wastewater treatment projects at a panel discussion Friday following the screening of a new film about Rio de Janeiro’s Guanabara Bay.
-
By the Numbers: Air Quality and Pollution in New York City
New York City is known for many things, but having clean air isn’t one of them. Explore some of the issues and challenges the Big Apple faces in clearing NYC’s air through interactive maps and data.
-
How to Rethink Urban Transit, and Pay for It, Too
“We have conflated mobility with access, but mobility is not the same as access. The best solution to a transportation problem is to not have to travel. The city itself was invented as a solution to a transportation problem. We have cities so we don’t have to travel.”
COP31, the 2026 United Nations Climate Change Conference, aims to advance dialogue, strengthen consensus, and accelerate climate action on a global scale. From November 9–20, 2026 in Antalya, Türkiye, heads of state, ministers, scientists, business leaders, and civil society will gather to advance efforts in emission targets, climate finance, and adaptation and resilience. Once again, our experts, students, and global thought leaders from Columbia Climate School and across Columbia University are contributing to key events, sharing insights, and helping shape the dialogue toward ambitious, science-based solutions. Learn More
