Street Lights Are Not the Primary Cause of Urban Light Pollution

Posted in

July 23, 2025

Street Lights Are Not the Primary Cause of Urban Light Pollution

A recent study highlights the growing issue of light pollution in urban areas, particularly in cities like Hong Kong, where excessive artificial lighting disrupts natural ecosystems and human health. Research shows that 83% of the world’s population lives under light-polluted skies, with the brightness increasing by 9.6% annually. A study conducted during Earth Hour found that turning off lights reduced the night sky brightness in Hong Kong by over 50%, underscoring the significant impact of non-essential lighting like billboards and commercial displays. Experts argue for a broader focus on all sources of artificial light, advocating for more responsible lighting practices to mitigate the environmental and health effects of light pollution.

Original source:

https://www.forbes.com/sites/lauriewinkless/2025/07/23/street-lamps-arent-the-main-source-of-light-pollution-in-cities/

Street Lights Are Not the Primary Cause of Urban Light Pollution

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