The Shanghai Manual, a United Nations guide for sustainable urban development, is revised every five years with annual updates. Since 2011, it has accumulated 220 case studies and over 200 policy suggestions from 50 countries. This year's edition focuses on "Youth Leading Climate and Local Action for Cities" and features 18 cases from 12 countries on urban renewal, low-carbon transitions and biodiversity conservation to boost youth involvement in climate action and urban resilience.#WorldCitiesD

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