The C40 Cities Climate Leadership Group, now in its 11th year, connects more than 90 of the world’s greatest cities, representing 650+ million people and one quarter of the global economy. Created and led by cities, C40 is focused on tackling climate change and driving urban action that reduces greenhouse gas emissions and climate risks, while increasing the health, wellbeing and economic opportunities of urban citizens. The chair of C40 is Mayor of Paris Anne Hidalgo, and three-term Mayor of New York City Michael R. Bloomberg serves as President of the Board. C40’s work is made possible by our three strategic funders: Bloomberg Philanthropies, Children’s Investment Fund Foundation (CIFF), and Realdania. C40 was founded on the idea that cities can achieve more by working together than acting alone. C40’s international staff supports mayors of the world’s megacities to deliver bold, ambitious and transformational action on climate change, through the exchange of ideas, programmes and policies; world class research; technical expertise; events that convene the world’s foremost climate experts and communications support to highlight the individual achievements and collective leadership of cities.