Cities are an integral part of the global effort to tackle climate change, as both a major source of greenhouse gas emissions, and a major source of innovative climate solutions. Until now, cities have been lacking a consistent and transparent way to measure and report emissions. The Global Protocol for Community-Scale Greenhouse Gas Emission Inventories (GPC) establishes credible emissions accounting and reporting practices that help cities develop an emissions baseline, set mitigation goals, create more targeted climate action plans and track progress.
The Compact of Mayors is an agreement by city networks – and then by their members – to undertake a transparent and supportive approach to reduce city-level emissions, to reduce vulnerability and to enhance resilience to climate change, in a consistent and complimentary manner to national level climate protection efforts.
Mexico City has been selected to host the sixth biennial C40 Mayors Summit in November 2016. The Summit will bring together C40 mayors from all over the world and hundreds of urban and sustainability leaders to advance urban solutions to climate change and highlight the leadership role of cities in addressing climate change.
Environmental groups and business and government leaders from around the world convened for Climate Week NYC. Representing more than 500 million people around the world, C40 played a significant role during the week-long event and featured prominently in the UN Secretary General’s Climate Summit.
The Nature Conservancy, in partnership with C40 Cities Climate Leadership Group and the International Water Association released a new report, Urban Water Blueprint: Mapping Conservation Solutions to the Global Water Challenge, which analyzes the state of water in more than 530 cities worldwide. View the infographic or an executive summary of the report, and visit the interactive website to download the full report and learn how natural solutions can benefit more than 700 million people living in the world’s largest cities.
The C40 Cities Climate Leadership Group (C40) is a network of the world’s megacities committed to addressing climate change.
Acting both locally and collaboratively, C40 Cities are having a meaningful global impact in reducing both greenhouse gas emissions and climate risks. C40 brings together a unique set of assets and creates a shared sense of purpose. C40 offers cities an effective forum where they can collaborate, share knowledge and drive meaningful, measurable and sustainable action on climate change.
C40 acheives results by creating and sharing knowledge. This has been our guiding principle for the past 10 years and continues to inform our work today -- from thematic "good practice" white papers on successful policies and programs, to cutting-edge research on urban watersheds, to the first global standard to measure greenhouse gas emissions from cities. We invite you to explore our latest examples below to learn more about C40's important thought leadership.