C40 delivers leading research to highlight the critical contribution cities must make in order to avoid dangerous climate change.
Our latest report, Unlocking Climate Action in Megacities, describes the barriers and challenges city governments face when taking climate action. It provides the basis for developing a shared understanding that can allow city leaders and key collaborators to work together to overcome these challenges. The report builds on CAM 3.0, C40's ongoing catalogue of city action to date, and serves as a call to all those who work with or in cities on tackling climate change to engage with city governments and accelerate climate action.
Measurement & Planning
Consistent measurement is the first step in effective management. The Measurement and Planning Initiative, housed within C40 Research, focuses on building capacity in member cities to tackle climate change strategically through the measurement of GHG emissions and climate impacts, annual reporting of climate data, and development of climate action plans. These efforts are provided through three workstreams: Measurement; Reporting; and Climate Risk and Adaptation Framework and Taxonomy.
Case Study Library
C40 case studies highlight the wealth of sustainable and urban innovation underway in our member cities. We invite you to explore the library to discover topics of interest to your city.
In the lead-up to COP21 in Paris, C40 and Sustainia have a shared mission to showcase 100 leading city solutions to climate change. The resulting publication, Cities100, will highlight the need for adapting new policies and celebrate the range of possible actions.
Open Data Portal
The Open Data Portal provides direct, interactive access to the wealth of statistical information provided annually by C40 cities. Through the Open Data Portal, it is possible to access and investigate a number of data sets on C40 cities, including GHG Emissions Inventories, Reduction Targets, and Citywide Risks. The Open Data Portal is another step towards providing increased access and availability regarding the impact and ambition of C40 cities.