Which city is recognized as the first member of C40?

New York City is recognized as the first member of C40, an organization that focuses on addressing climate change and driving urban action for a sustainable future. The significance of New York City's membership stems from its proactive approach to environmental issues and urban sustainability. In the early 2000s, the city took considerable steps towards implementing policies that would not only reduce greenhouse gas emissions but also foster resilience against the impacts of climate change. This pioneering stance made it a logical and symbolic choice to lead the way in C40's formation.

Additionally, being part of C40 aligns with New York City's historical role as a global leader in various sectors, including finance, culture, and now, environmental action. The city's initiatives often serve as a model for other urban areas aiming to combat climate-related challenges. Thus, New York City's early commitment and involvement were instrumental in setting the foundation for C40 and encouraging other cities to join this vital network as they work towards shared climate goals.