English around us

A world of words

Light polllution

Brightening of the night sky that inhibits the observation of stars and planets, caused by street lights and other man-made sources.

After landmark buildings across the world faded into darkness on 24 March as part of Earth Hour, a worldwide campaign encouraged  by the World Wildlife Fund’s (WWF) in an effort to send a symbolic message about the need to protect the planet, a study this week has found that Hong Kong is one of the worst offenders in the world for light pollution.

Parts of the territory have been registered as 1,200 times brighter than a normal dark sky. Researchers say light pollution can affect health.

The world’s brightest city


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This entry was posted on 27/03/2013 by in Ecology, Health, Listening, Reading.
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