NEW YORK, Oct. 21 -- The United Nations posted the following news release:

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On World Cities Day, Secretary-General Urges Adequate Housing for All

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Following is UN Secretary-General Antonio Guterres' message for World Cities Day, observed on 31 October:

On this World Cities Day, we confront a stark reality: more than 3 billion people lack access to adequate housing, including 1.1 billion living in informal settlements.