“We cannot end the era of fossil fuels without working together” – C40 Co-Chairs address Heads of State ahead of COP28
By C40 Cities Co-Chairs Yvonne Aki-Sawyerr, Mayor of Freetown and Sadiq Khan, Mayor of London Dear Heads of State, We...
17 cities join C40’s third Students Reinventing Cities competition, calling on youth to redesign urban areas
Young people across the globe are invited to develop ideas for cities to create green and thriving neighbourhoods that improve…
C40 launches Water Safe Cities Accelerator to tackle flooding and drought
16 cities signed a commitment to address flooding and drought, and improve resilience by 2030
C40 Cities announces historic co-chair model, with London and Freetown mayors at the helm
In a move to champion inclusive global leadership in climate action, C40 Cities today announced its new co-chair model with...
12 winners of the second Students Reinventing Cities competition announced
More than 1,000 young people across the world reimagined urban spaces into green and thriving neighbourhoods as part of C40's…
In Focus: UN Climate Ambition Summit and NYC Climate Week
A round-up of C40's highlights, key announcements and mayors' global climate leadership from the UN Climate Ambition Summit and NYC…