Mayors, governors and subnational leaders call for greater action on fossil fuels from Heads of State at UN Summit
Ahead of the UN Summit of the Future, mayors are urging Heads of State to step up action and leave…
C40: 2022 highlights
With contributions from C40 Chair, Mayor of London Sadiq Khan, and C40 Executive Director Mark Watts Foreword by C40 Chair,...
How nature is combatting the climate crisis in cities
By Mark Watts, Executive Director of C40 Cities This week’s COP15 biodiversity summit is crucial for the future of life...
New C40 research reveals the cost of fossil gas, showing clean energy is cheaper, creates more jobs and causes less pollution 
Bold action to phase out fossil gas and expand clean energy could save hundreds of thousands of lives, generate jobs…
Unlocking green finance
Exploring the ways cities can secure the green finance needed to take urgent and united climate action.
Urban 20 mayors call on G20 to foster a sustainable economic and social recovery for all
At the Urban 20 Summit in Jakarta, city leaders sign a communiqué calling for more investments in sustainable mobility and…