Empowering Cities with Data C40 leverages an unprecedented database of climate actions taken by cities, an extensive network of partnerships, and unique organizational insight to demonstrate the power of cities to address climate change. Our research analyzes key trends, identifies opportunities for further action across the global C40 network, and helps to prioritize initiative areas with the greatest potential impact. C40’s research agenda is committed to creating actionable data, supporting decision-making and driving investments. C40’s Deadline 2020 research identified the scale of the climate crisis facing the world’s great cities and defined precisely what needs to be done by C40 cities to deliver on the ambition of the Paris Agreement. The world’s megacities must act to peak emissions by 2020 and then nearly halve carbon emissions for every citizen in a decade.
of cities reporting data to C40.
of cities report that climate change poses a significant risk to their city.
The Voice of Megacities on the Global Stage As leaders of the world’s great cities, C40 mayors have provided unique global leadership, over more than a decade, in the fight against climate change. Playing a vital role in driving nation states to secure the Paris Agreement on Climate Change, C40 mayors are doing their part to deliver on its ambition by curbing greenhouse gas emissions, adapting to the realities of a changing climate, and ensuring their cities are equitable and inclusive places to live and work. C40 supports mayors to share their achievements and collectively speak out on climate issues on a world stage. The 2016 C40 Mayors Summit in Mexico City brought together more than 40 mayors and secured headlines around the world for the scale of their climate commitments. The Women4Climate conference brought together C40’s powerful women mayors, alongside female business leaders, in New York City, demonstrating the key role of women leaders in the global fight against climate change. Through agenda setting initiatives such as the C40 Clean Bus Declaration, commitments to tackle air pollution and efforts to finance sustainable infrastructure, C40 supports mayors to achieve global impact.
Following the US government’s decision to withdraw from the Paris deal, we need more than ever to show how cities around the globe are takin...