land use, construction, waste management and education. Participation in city networks like ICLEI, with their potential for sharing of best practices, peer exchange, and joint projects, rose significantly in the 2000s.As of 2020, ICLEI counted more than 1,750 local governments within its network.As of 2023, over 2,500 cities towns and regions were listed as members.

History and structure

ICLEI was founded in September 1990 as the "International Council for Local Environmental Initiatives" when over 200 local governments from

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