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Expert Voices: John Elkington, co-founder and Executive Chairman of Volans, on why city mayors are the ambassadors for the future

An ambassador, said Sir Henry Wotton, who practiced the art in the 1600s, “is an honest gentleman sent to lie abroad for the good of his country.” Catchy, but three things strike me as questionable about this attempt to distil the essence of diplomacy. First, the foreign services of a growing number of nations are…

First Global Standard Launched to Measure City Greenhouse Gas Emissions & Support Compact of Mayors

Today at COP20 in Lima, C40 and partners World Resources Institute (WRI) and ICLEI – Local Governments for Sustainability (ICLEI) released the first widely endorsed standard for cities to measure and report their greenhouse gas (GHG) emissions, called the Global Protocol for Community-Scale Greenhouse Gas Emission Inventories (GPC). By providing a framework for credible emissions…

C40 Voices: James Alexander, Head of Finance & Economic Development Initiative, on Toronto’s Innovative Investment in Urban Climate Solutions

Sharing good practice in city green funds is one areas of focus for C40’s Sustainable Infrastructure Finance Network.  Following webinars featuring the cities of Amsterdam, London and New York, the Network recently hosted Julia Langer, Chief Executive of Toronto Atmospheric Fund (TAF). Julia presented the Fund’s fascinating work of using a small endowment to create,…

The Nature Conservancy & C40 Release Urban Water Blueprint

Today, The Nature Conservancy released a report analyzing the state of water resources for 530 cities worldwide. The report – Urban Water Blueprint: Mapping Conservation Solutions to the Global Water Challenge – and interactive websitewere done in partnership with C40 and the International Water Association, and offer recommendations for how to revitalize strained water resources…

In Conversation: C40’s Johanna Partin leads discussion with USDN and the Cities of London & Curitiba

For the second year in a row, C40 and the Urban Sustainability Directors Network (USDN) teamed up to bring a couple of international C40 cities to USDN’s annual meeting, held last month in Houston. C40’s Regional Director for North America, Johanna Partin, sat down with select participants to get their thoughts on the exchange. Johanna…

12 cities and 12 hundred participants gather in Rotterdam to talk deltas and climate change

Last month, concurrent with the UN Climate Summit, twelve C40 cities and more than 1200 people gathered in Rotterdam to attend the Second Deltas in Times of Climate Change Conference, supported by C40. Representatives from Tokyo, Hong Kong, Jakarta, Ho Chi Minh City, Singapore, Melbourne, New Orleans, Copenhagen, London, Venice, and Washington DC joined their…

C40’s Mark Watts: Can Cities Carry the Weight of the World?

Response Magazine, a publication of pre-eminent engineering firm Ramboll, recently included C40 Executive Director Mark Watts in both a feature story and exclusive Q&A. The issue focuses on resource optimization, particularly how city officials and other decision-makers can ensure an approach that will sustain future generations. In an article entitled “Call for Action: Cities Stepping…

C40 Teams Up with Ford Foundation on New ‘Compact & Connected’ Cities Network

With funding from the Ford Foundation, C40 is launching our newest C40 network on ‘Compact and Connected’ Cities, which will focus on making cities more accessible through transit oriented development plans. The network is designed to help cities share best practices from around the world and access tools and technical expertise needed to reduce urban…

London Could Become a National Park … Sign Up to Be a Founder!

Sign-up now to show your support in making London a national park in Britain—and be entered into the list of its founders!

C40 Makes a Splash During Climate Week

During Climate Week NYC, C40 garnered major media coverage around our activities and announcements, and we thought we’d share some highlights. Cities were a major player during the UN Secretary General’s Climate Summit on Tuesday of Climate Week, where C40 and partners announced Compact of Mayorsand released new data on both the emissions reductions global cities have already…

Cities to Take Center Stage During Climate Week

Next week, environmental groups and business and government leaders from around the world will convene in New York City for Climate Week NYC, sponsored by C40 partners, the Climate Group and CDP. C40 cities represent more than 500 million people around the world, making us a significant voice demanding climate action of world’s leaders. Because of…

Expert Voices: Ritt Bjerregaard, former Lord Mayor of Copenhagen, on her role as a judge for the City Climate Leadership Awards

Once again I have had the honour to serve as a judge for the C40 & Siemens City Climate Leadership Awards, taking place during Climate Week NYC in September. Over the past few months, the other judges and I have read and evaluated no less than 31 shortlisted projects – chosen from 87 total entries –…

C40 Chair, Rio de Janeiro Mayor Eduardo Paes Featured in Cities Today

This month’s issue of Cities Today – a magazine for urban planners and other city experts – featured an interview with C40 Chair, Rio de Janeiro Mayor Eduardo Mayor Paes. In the interview, Mayor Paes talks about his goals as the new chair of C40 Cities, and shares the major sustainability efforts his city has…

Unleashing the power of data for Good

By James Hodson, Bloomberg R&D Humans solve problems by identifying the common patterns that can unlock similarities, explain differences, and relate diverse facts into a coherent whole. As the number of sources of information grows, systems become more complex, and social interactions take hold, decision making becomes hard; more an art than a science, prone…

12 Twitter Handles You Should Follow

Nearly 16,000 of you follow C40 Cities on Twitter – and we do our best to keep you up to date with everything important when it comes to cities and climate change. Each day, more and more voices join the conversation about cities and climate action happening in the Twitterverse, and we’re pleased that so many of…