C40 World Mayors Summit to be held in Rio de Janeiro on the eve of COP30
London and Rio de Janeiro (June 24 2025) – The Mayor of London and Co-Chair of C40 Cities Sadiq Khan...
Ten years on from the Paris Agreement, mayors gather in Paris with united call for climate delivery ahead of COP30
Paris, France (23 June 2025) – Ten years after the landmark Paris Climate Agreement was signed at COP21, city leaders...
10 years on from Paris, why cities and local leaders are the best hope for climate action
COP30 this November marks a decade since 196 states signed the Paris Agreement on a collective response to the climate…
Former mayor of Los Angeles Eric Garcetti named Ambassador for Global Climate Diplomacy ahead of COP30
Garcetti joins global cities network to help with climate diplomacy and building partnerships with national governments to support local action...
International Women’s Day – Accelerating climate action
From leading the way as the first female mayors of their cities to playing key roles in reforming climate policy,…
What happened at the U20 Summit in Rio?
What demands do mayors have for national leaders at the G20 Summit and COP29, following a successful U20?