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Despite the end of the Covid-19 epidemic in Hong Kong last year and the easing of related restrictions, economic woes persist. In a bid to boost tourism, the government announced plans to host a monthly firework display at Victoria Harbour. It is a wonder that this idea managed to make it past the drawing board.
After all, fireworks release large amounts of particulate matter. A US study found that the 24-hour average concentration of fine respirable particulates (PM2.5) rose by 42 per cent – 5 micrograms per cubic metre of air (μg/m3) across the nation immediately after the Fourth of July fireworks. For sites close to the fireworks, the average concentrations went up by as much as…
