Light Pollution by Ali D.

Light pollution, also known as photopollution or luminous pollution, is excessive or noticably unnatural light that could be formed by electric light bulbs, street lighting, building lighting and landscape lighting or any form of artificial light that does not occur naturally in our solar system. This type of pollution prevents people from seeing stars in the sky depending on where they reside. One of the negative effects may be that it interferes with scientist at observatories. Another effect may be that some people experience abnormal sleeping patterns because of the excessive light projecting onto the sky. Light pollution can cause health problems and can disrupt the ecosystems. It is most noticeable in highly populated cities in Japan, North America and Europe.

Light pollution is caused mostly from bad lighting design, which allows artificial light to shine outward and upward into the sky. Badly designed lighting washes out the darkness of night altering the light levels, and light rhythms, to which many forms of life including ourselves, have adapted. Wherever artificial light is projected into the natural world, some aspect of life, whether it be migration, reproduction or feeding, is affected.

Discussion Question:

1. Have you ever noticed a disruption in your sleep pattern because of light pollution?

2. Do you think that light pollution may have any effect on global warming?

Links where articles were found: ,


~ by Student Entry on April 1, 2009.

15 Responses to “Light Pollution by Ali D.”

  1. Good article!I did not know that light pollution is noticably unnatural light that could be formed by electric light bulbs, street lighting, building lighting and landscape lighting or any form of artificial light that does not occur naturally in our solar system. Very cool!

  2. Cool article! I haven’t noticed a disruption in my sleeping pattern but if a light is still on when i go to bed i would tend to wake up more throughout the night. Light pollution probably increases global warming because of the excess heat and the blocking of the sky. With our decreasing ozone layer blockage will not help and light pollution is aiding the melting of glaciers. So yes, it does have an impact on global warming.

  3. That is a very good answer. That makes me think about global warming a lot.

  4. WOW!!! That was such a good article! šŸ™‚ I can’t believe that pollution can be so bad that it prevents people from seeing stars in the sky and interferes scientists observations. I have never experienced abnormal sleeping patterns because of light pollution, and I hope that I never will!! Great article Ali!!

  5. I never thought that regular lightbulbs could actually the earth. I wonder if energy saving lightbulbs do the same thing?

  6. Great article Ali!!!! I never knew that using so many lights can change the way we look at stars! We should start using more light bulbs that help the world that way in millions of years from now the Earth will still be an amazing place. Also, hopefully somebody will come up with a new lighting design soon so we can help our planet! Plus, i hope i never have a disruption in my sleeping pattern just because of lights!

  7. Good Job Ali!!! I really liked your topic and how you described this cause. I think that any type of pollution will have an effect on global warming. It is using up the planets resources. It is also killing animals because of this change in temperature. People should keep lights off for most of the day because it is sunny or they can get environmentally friendly bulbs. This can also stand for streets.

  8. Great article Ali! I had no idea that street lights and stuff like that caused pollution! Now i know why sometimes the sky doesn’t seem dark at night and I have a problem falling asleep. Your description in this article was great and you probably taught all of us something we didn’t know before. I know that I didn’t know this until after I read your article. Once again, great article and the pictures were great!

  9. Cool i never knew that pollution was that bad! Almost every time i look at light i see this foggy pollution. i never knew what it was though! next time i notice something different in the way i sleep and the light is on, ill think differently about it. (i do usually have problems sleeping when lights are on) p.s nice job writing it out šŸ™‚
    ~Olivia *omygoosnas*

  10. Wow! good job ali! Im so surpised that light gives of polution. I have never heard anything like that before. No, i really never noticed my sleep pattered changed becouse of light pollution. Buti wake up earler. I do think light has a effect on gobal warming. Nice job ali!!!! 8 ]

  11. Great job Ali!! I think that light pollution could have a minor or major effect on global warming depending on circumstance. In a town or the suburbs, it would have a very minor effect if it even had one. In urban areas, however, there are a lot of apartment and streetlights on throughout the night. Secondly, I have noticed no effect on my sleep at night. A theory that could possibly be true is that New York literally is the city that never sleeps. With all of the apartments and streetlights, this could easily and seriously alter their sleeping patterns. This was an interesting and captivating article.

  12. Nice article! I never knew light could cause pollution. I can’t believe that sleep patterns are changed because of it. Also, that you can have health problems because of it. GOOD JOB!!!!!

  13. Good job Ali! I never knew that lights could affect the sleep pattern of people and scientist and the study of stars. I really never noticed the malfunctions of lights and what could happen if it kept on having the malfunctions.

  14. hey, good job i never have thought about that! your description in the article was good. oh! [no wonder my sister says its hard to sleep with the light on] Again great job with your article. :] :] :] :]

  15. Ali,
    Great job! Loved your article, extremely interesting… I wanted to respond to one of your questions. Yes, I do believe that light pollution has a large effect on global warming. Have you ever put your hand under a light bulb? Have you ever actually touched the bulb after it was turned on? Well, after a little while, the bulb gets hot. The bulb also has the ability to heat a small space but depending on the size and power of the bulb can indicate how large that space may be. If one light bulb can do that, imagine billions of others, all heating up a defined space surrounding them. Can you conceptualize how much heat, and light, that is being let off because of careless artificial light construction and placement? So all in all, yes I do think that artificial light effects global warming significantly.
    Again, great article Ali! Nice job šŸ™‚

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