Strong advocates for the role of cities in addressing climate change.
C40 was created in 2005 by former Mayor of London Ken Livingstone,
and forged a partnership in 2006 with the Cities Program of President
Clinton’s Climate Initiative (CCI) to reduce carbon emissions and
increase energy efficiency in large cities across the world. Under the
leadership of then Mayor of Toronto David Miller, who served after
Mayor Livingstone as C40 Chair, the organisation advanced programs and
partnerships that drew international recognition for the role of cities
as leaders in climate action.
108th Mayor of New York City Mayor Michael R. Bloomberg served as C40
Chair from November 2010 to December 2013, during which time C40 fully
integrated with the Clinton Foundation's CCI Cities Program. Mayor
Bloomberg currently serves as President of the C40 Board of Directors.
Rio de Janeiro Mayor Eduardo Paes began his tenure as C40 Chair in
Learn more about the people leading the organisation as part of the
Board of Directors,