Concern Over LED Street Light Installation
The author has concerns about the methodology of installing LED streetlights. In the Havendale area, the old halogen lights were placed about 100 feet apart (one on each pole), giving a well-lit stretch for the entire length of the road. In this new dispensation, the new, brighter LED lights have now been placed on every […]
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Impact of LEDs on Light Pollution
As infrastructure increases globally, artificial lighting is available in a larger and larger area. Developing countries chose LED lighting wrongly believing that LEDs are a long-term, more sustainable lighting solution. However, a huge problem with LEDs is their color. Making the switch from sodium lights that are orange-yellow in color, to the higher powered, bluish-white […]
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LED Street Lights May Be Damaging To Your Health
According to the AMA, outdoor lighting at night, particularly street lights, should have a color temperature (CT) of not more than 3000 Kelvin (K). A white LEDs at CT 4000K or 5000K have been chosen to be installed in street lights in cities such as Seattle and New York. However, after these installations, many complained […]
Read MoreLED Street Lights: Worth the Risks?
“Recognizing the detrimental effects of poorly-designed, high-intensity LED lighting, the American Medical Association (AMA) encourages communities to minimize and control blue-rich environmental lighting by using the lowest emission of blue light possible to reduce glare. The AMA recommends an intensity threshold for optimal LED lighting that minimizes blue-rich light. The AMA also recommends all LED […]
Read MoreDoctors Issue Warning About LED Streetlights
According to the American Medical Association (AMA), “The first is discomfort and glare. Because LED light is so concentrated and has high blue content, it can cause severe glare, resulting in pupillary constriction in the eyes. Blue light scatters more in the human eye than the longer wavelengths of yellow and red, and sufficient levels […]
Read MoreLED Streetlight v. Wildlife
According to this article, LED streetlights also have an adverse effect on nocturnal wildlife. Scientists have found that migrating birds are attracted to unnatural lighting, which often results in injuries or death when they collide with reflections on buildings or other structures. High-intensity light pollution has also been linked to low survival rates for hatchling […]
Read MoreLED Streetlights- Erasing the Night Sky
By transitioning to light-emitting diode (LED) light bulbs — cities save a ton of energy, but as we are now learning, are also making light pollution worse. LED lights are so bright they block out more stars than more traditional light sources. Link to Article PDF
Read MoreLED Streetlights Save Energy, but Could Have Serious Side Effects
“Unfortunately, exposure to blue-rich light at night can lead to decreased melatonin secretion in humans. Melatonin is a hormone secreted at night by the pineal gland that helps balance the reproductive, thyroid, and adrenal hormones and regulates the body’s circadian rhythm of sleeping and waking. Lower Melatonin levels have been tenuously linked to increased risk […]
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Davis Will Spend $350,000 To Replace LED Lights After Neighbor Complaints
Enough neighbors complained about the brightness and the cool color temperature of the new LED bulbs that the city put a pause on its energy savings project this summer. While it’s true that many people within the community have expressed support for the lights, we’ve actually received more concerns about the brightness of the lights Link […]
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Hong Kong’s Light Pollution “Worst in the World”
Hong Kong’s local urban night sky is as much as 1,000 times brighter than international norms making it the most light polluted city in the world, according to a study by the faculty of science at the University of Hong Kong. Link to Article PDF
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