Cities join the Global Mutirão as COP30 begins in Belém
Belém, Brazil (10 November 2025) – C40 Cities’ COP delegation has travelled to Belém buoyed by a ringing endorsement of...
UN Secretary-General receives local leaders’ joint outcome statement during COP30 World Leaders Summit
The statement is the final outcome from the Local Leaders Forum in Rio de Janeiro – a declaration of support...
COP30 Local Leaders Forum Statement
A Message from Local Leaders to COP30 Statement of support from more than 14,000 local leaders to national governments at...
Cities lead the world in climate action as C40 World Mayors Summit 2025 begins in Rio
Rio de Janeiro, Brazil (3 November 2025) – Mayor of London Sadiq Khan and Mayor of Rio de Janeiro Eduardo...