New York Climate Week 2026
Catch up on C40’s highlights from New York Climate Week 2026 As New York Climate Week comes to a close,...
Global decision-making is more effective when cities have a seat at the table
Nearly 1 billion people live in C40 cities. Mayors see firsthand the challenges people face and the solutions that can...
Let’s accelerate: Supporting ride hail drivers to drive electric in Phoenix
We are moving toward the final phase of the project to support the City of Phoenix in electrifying high-mileage vehicles....
Cities are taking the lead on clean air
Why clean air matters Air pollution is a global health emergency. In 2023, it claimed 7.9 million lives, making it...
Cities aren’t waiting to act; they are outpacing their own governments on transitioning away from fossil fuels
The climate crisis is a fossil fuel crisis Burning fossil fuels such as coal, gas, and oil is the root...
Young people are reimagining climate-resilient cities
International Youth Day 2026 In cities around the world, the climate crisis is no longer a distant threat, and the...