C40 is a global network of nearly 100 mayors of the world’s leading cities that are united in action to confront the climate crisis. 

These mayors are committed to cutting their fair share of emissions in half by 2030. Waste and sustainable materials management can help cities reduce 15-20% of their emissions through reduction, avoidance, recycling, treatment and offsetting.

C40 helps mayors to do this by:

• Raising climate ambition through 1.5°C climate action plan support
• Building equitable and thriving communities via global and regional programmes
• Building a global movement through robust international advocacy and diplomacy
• Scaling up climate action and sharing good practices across high-impact sectors
• Facilitating access to finance for investment in projects boosting resilience.