Light pollution, as described by wikipedia, is also known as photopollution or luminous pollution. It is an excess or obtrusive light created mainly by humans. Among other effects, and like any other form of pollution, it disrupts ecosystems, can cause adverse health effects, obscures the stars for city dwellers, and interferes with astronomical observatories.
The obvious thing to do is to develop a "lights out" after business policy. But other than that, I can't really think of anything else that can be done because light pollution is the result of industrial civilization. It is inevitable in every developed country. It's one thing to suggest setting a lights off time, but another to actually do it. In a city that has so many inhabitants, the idea seems a bit far-fetched. Besides, businesses in places like Lankwai Fong thrive on HK's sleepless nights. However, there are some businesses that are just downright excessive and overly flamboyant when promoting themselves in HK. Prada, for one, deserves a big smack in the head . Its massive neon sign apparently "spills intense white light onto a near-deserted Central street until 5 a.m. every day". HK might be a cosmoploitan, but hardly anyone is out at 5 a.m...
In an ideal place where light pollution does not exsit, life as we know it in HK would not be the same. And as selfish as this makes me sounds, I'm not sure if I am willing to give that up. As much as I want to be eco-friendly, I have to say that I've always liked the blazing lights of HK! It's what makes HK so alluring and lively.
