Light Pollution

When the first night arrived in Sydney, I was attached by the dark sky. That is full of star in the sky. I can see them clearly. However, when i am in Hong Kong, due to the serious light pollution, there is hard to see the star in the night. 

starry night at Southern Hemisphere

Hong Kong has a nickname called "Never Sleep City". That mean most of the shop or office will work till overnight. Due to the spotlights and LED billboards on the streets, Hong Kong's sky is brighter than other cities.It cause Hong Kong become the world's worst city for light pollution.

 

The light pollution will create many side-effect, First, the strong light will affect the residential area, the bright light will pass thought the windows. It will affect the people sleep.  The biological clock will be affected and health may become worse. On the other hand, that is the most famous thing in Hong Kong and it create a great income in tourism. In my opinion, the Hong Kong Government should try to make a balance of tourism development and the light pollution. Not to let the light pollution problem become serious.

Reference:

http://lighttalk.via-verlag.com/2013/03/light-pollution/