On the first day of COP21, mayors and citizens of C40 cities urge nations to act on climate change
As the global climate talks get underway in Paris today, the world’s great cities continue to show why they are…
From Copenhagen to Paris, cities and mayors are leading the way on climate action
Today, the C40 Cities Climate Leadership Group (C40) and research partner Arup released Climate Action in Megacities (CAM 3.0), a…
100 Reasons Cities are Winning the Climate Fight
As we approach the UN climate Change Conference, COP21, in Paris this December, the focus will be on national governments…
Polisdigitocracy: Digital Technology, Citizen Engagement and Climate Action – A New C40-Arup Report
In 2013, widespread protests brought Rio de Janeiro to a halt. People took the streets calling for better health and…
Aujourd’hui, nous sommes tous Parisiens
Today, on behalf of C40’s 82 member cities and all our staff, I offer our solidarity, unshakeable friendship and condolences to…
Kolkata joins C40, becomes fifth member city from India
C40 extends a warm welcome to Kolkata, our newest member city. The capital of India’s West Bengal state, Kolkata’s metropolitan…