【明報專訊】AS GLOBAL WARMING tightens its grip, extreme weather hits different places in different ways. The night before last (March 30), the Hong Kong Observatory issued the black rainstorm warning, which is rare for March. What is more, over the past 26 years, there have been only four hailstorms in March in Hong Kong. The black rainstorm and the accompanying hailstones were therefore no normal phenomena, but were signs of extreme weather.
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