World Mayors Summit Day 3
We do this for our today, we do this for our tomorrow, and we will do this together. This was...
World Mayors Summit Day 2
Cooler cities, transformed food systems, and climate-focused urban planning. At the 2025 World Mayors Summit, C40 Cities announced three new...
COP30: As global pledges move forward, cities are proving what real climate action looks like. Now they need the funds.
From the Baku-to-Belém Roadmap and beyond, COP30 is a pivotal moment to mobilize climate finance, strengthen policies, and deliver real...
World Mayors Summit Day 1
The World Mayors Summit 2025 opened with a powerful plenary as the Mayors of London, Freetown, and Rio de Janeiro...
There’s something new on climate coming out of China
Mark Watts, Executive Director of C40, explores why China's "irreversible" green transition and growing global ambition are offering a new…
C40 at 20: Two decades of transformative global climate action
How C40’s model of collaboration will shape the future of global climate action To mark its 20th anniversary, C40 is...