Thought Leadership| C40 Cities
C40 Cities and the City of Bengaluru co-hosted a first-of-its-kind inclusive climate action (ICA) workshop themed “Participatory Practices for Inclusive...| C40 Cities
Learn more about the UCAP CAI convening hosted by Jakarta and what countries in the region are doing to progress climate finance.| C40 Cities
The global development community gathered last week in Seville to discuss the future of development finance and the Sustainable Development Goals.| C40 Cities
Learn how cities like Chefchauoen are moving from commitments to real delivery to deliver urgent action and climate finance.| C40 Cities
What leaders must do now to accelerate action, protect millions of lives and create thriving, water-safe cities.| C40 Cities
As COP28 discussions focus on food, agriculture and water, we look at how cities are enhancing climate resilience by tackling flooding and drought| C40 Cities
Learn more about how C40 Cities and The Ramboll Foundation are working together to put communities at the heart of city planning.| C40 Cities
Eric Garcetti joins the global cities network to boost climate diplomacy and support local action through national partnerships.| C40 Cities
In 2005, then-Mayor of London Ken Livingstone brought together 18 mayors from some of the world’s largest urban centers to determine how they could work together to cut carbon emissions and lead on global climate action. It was prompted by Mayor Livingstone’s own efforts to devise a London climate action plan, and the benefit his team gained from contacting some of what was then a small group of cities that were taking similar action.| C40 Cities
C40 Cities joins global leaders to unveil an ambitious US$800 billion city climate finance ask to drive clean energy, sustainable transit, and affordable, energy-efficient housing in cities worldwide.| C40 Cities
The C40 Cities Finance Facility (CFF) is excited to announce its latest ‘Call for City Applications’ to advance climate action infrastructure projects with cities in the Global South.| C40 Cities
Multilateral Development Banks (MDBs) convened to discuss plans to scale up and improve access to climate finance for cities.| C40 Cities
Pope Francis was a true global leader whose commitment to climate justice has inspired millions. Mark Watts, the Executive Director of C40 Cities has paid tribute to him.| C40 Cities
C40 Cities joins the Coalition for Higher Ambition in urging bold, science-based EU targets for 2040.| C40 Cities
City representatives from three continents gather in Medellín, Colombia, to focus on accelerating the decarbonisation of public buildings.| C40 Cities
C40 Cities, a global network of nearly 100 mayors united in climate action, is pleased to announce that Mete Coban...| C40 Cities
The Journal of City Climate Policy and Economy is seeking original research and policy guidelines for an open-call issue due to be published in August 2026.| C40 Cities
IBM and C40 Cities will collaborate through the IBM Sustainability Accelerator and scale up social innovation action in cities.| C40 Cities
Can universal principles of climate equity and justice be applied across different geographies in the context of climate resilience, or...| C40 Cities
Despite President Trump's withdrawal of the US from the Paris Climate Agreement, mayors are united in action to confront the climate crisis.| C40 Cities
C40's VISIBLE project, in partnership with Laudes Foundation, supports London, Madrid & Oslo in piloting clean construction initiatives.| C40 Cities
The Grundfos Foundation has renewed its support for the Water Safe Cities programme with a commitment of US$ 3.64 million over the next three years.| C40 Cities
Foreword from the C40-MMC Task Force on Climate and Migration: 2021–2024 Impact Report by Mark Watts and Vittoria Zanuso| C40 Cities
Casablanca, Morocco, is to become the newest member of C40 Cities on 1 January 2025| C40 Cities
At the Climate Action Implementation (CAI) Africa Regional Academy, Lagos announces the launch of the Ikosi Fruit Market biogas plant, which diverts organic waste and provides cooling and lighting energy to improve livelihoods.| C40 Cities
Cities are essential to accelerating climate action with a transformative vision for COP30 and future COP summits. Empowering local leaders to drive implementation can shift COPs from negotiation to action delivering solutions rooted in accountability, inclusion, and tangible progress.| C40 Cities
C40 Cities Co-Chairs Mayors Sadiq Khan and Yvonne Aki-Sawyerr and C40 Executive Director Mark Watts reaffirm mayors' commitment to tackling the climate crisis following Donald Trump’s election.| C40 Cities
C40 Cities, Community Jameel and UrbanShift launch a new 'Climate Action Guide for Urban Planners' at the World Urban Forum in Cairo, Egypt.| C40 Cities
Partners of the LA - Long Beach - Shanghai Green Shipping Corridor launch their inaugural progress report, outlining milestones and next steps.| C40 Cities
In Focus| C40 Cities
C40 Co-Chair and Mayor of Freetown, Yvonne Aki-Sawyerr, has welcomed the International Energy Agency’s (IEA) call for a people-centred clean energy transition| C40 Cities
Learn about C40 Cities' It's in the Air campaign, which focused on clean air zones as a major solution to the ongoing climate crisis.| C40 Cities
Ahead of the UN Summit of the Future, mayors are urging Heads of State to step up action and leave fossil fuels behind.| C40 Cities
Dhaka releases first-ever Climate Action Plan (CAP) to improve lives, reduce pollution and increase resilience to increasing climate impacts.| C40 Cities