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Some 3.5 billion people reside in urban areas. This number is projected to reach 6.3 billion by 2050, increasing from 50% to more than 70% of the world’s population. Cities are centres of creativity and economic progress but they also face many environmental challenges due mainly to air pollution and weather, climate and water-related hazard.
The World Meteorological Day Celebration at WMO will start at 14h30 (GMT+1). There are three guest speakers, one speaking live from Hong Kong, China. A live video stream is available.