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Large Cities Climate Leadership Group: Wikis


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The Large Cities Climate Leadership Group, also known as the C40 Cities (and originally as the C20 Cities) is a group of cities working to reduce urban carbon emissions and to adapt to climate change. It believes it has an important role to play as cities contain around 50% of the world's population, consume 75% of the world's energy, and produce 80% of its greenhouse gases.[1] The Group's secretariat is based in London.

The group was founded after a meeting of delegations from 18 cities at the October 2005 World Cities Leadership Climate Change Summit, organised by the Mayor of London.

On August 1, 2006, the Group signed a memorandum of understanding with the William J. Clinton Foundation's Climate Initiative,[2] under which the Clinton Foundation will provide technical and communications support.

The Group held their first summit in 2005 in London and their second in 2007 in New York.[3] At the second summit, 13 cities joined the group.[4] The third summit was in May 18–21, 2009 in Seoul. Next forth summit will be held in 2011 in São Paulo.



Ethiopia Addis Ababa
Greece Athens
Thailand Bangkok
People's Republic of China Beijing
Germany Berlin
Colombia Bogotá
Argentina Buenos Aires
Egypt Cairo
Venezuela Caracas
United States Chicago

Bangladesh Dhaka
Vietnam Hanoi
Hong Kong Hong Kong
United States Houston
Turkey Istanbul
Indonesia Jakarta
South Africa Johannesburg
Pakistan Karachi
Peru Lima
Portugal Lisbon

United Kingdom London
United States Los Angeles
Spain Madrid
Australia Melbourne
Mexico Mexico City
Russia Moscow
India Mumbai
India New Delhi
United States New York City
France Paris

United States Philadelphia
Brazil Rio de Janeiro
Italy Rome
Brazil São Paulo
South Korea Seoul
People's Republic of China Shanghai
Australia Sydney
Japan Tokyo
Canada Toronto
Poland Warsaw

Affiliate cities

Netherlands Amsterdam
United States Austin
Spain Barcelona
South Korea Changwon
Denmark Copenhagen
Brazil Curitiba
Germany Heidelberg
Nigeria Lagos
United States New Orleans
United States Portland
Netherlands Rotterdam
United States Salt Lake City
United States San Francisco
United States Seattle
Sweden Stockholm
Japan Yokohama

See also


  1. ^ Cities and climate change, C40 Cities, published 2007, accessed 2007-05-15
  2. ^ Former President Clinton launches climate change initiative, Mayor of London, published 2006-08-02, accessed 2007-05-15
  3. ^ World's mayors hold climate change summit, Yahoo News, published 2007-05-15, accessed 2007-05-15
  4. ^ Who's Coming, New York City Climate Summit, published 2007, accessed 2007-05-15

External links


In the media


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