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International Dark Sky Association – Phoenix Area Chapter

  • IDA Phoenix Area Chapter
  • The Valley of the Sun
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Research on Light Pollution

Light Pollution and Human Health

Interested in learning more about light pollution? Visit the research database below!

Artificial Night at Light Research Literature Database

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Join Camp Verde Dark-Sky Community, an International Dark Sky Community, tonight for a Virtual Science Café!
The Virtual Dark Sky Festival is now LIVE! Check out the Fountain Hills Dark Sky Association website for videos, an online auction, and more to celebrate natural darkness! 💫 Link in bio: http://fhdarksky.com/
Join us on March 28 at 8:30 p.m. to support #EarthHour and @world_wildlife. Turn off your outdoor lights for one hour and see the natural world come to life. Please join us in this movement and help spread the word in protecting our #nightskies and nocturnal #wildlife! 💫🌌🦇🦉 #idadarksky #darksky #darkskies #lightpollution #savetheplanet #astronomy #turnoffthelights #astro #astrophotography #nocturnal #nocturnalanimals #protectwildlife
We interact with streetlights every night. We probably think nothing twice of the light they provide. However streetlights contribute to a vast majority of light pollution in cities. This streetlight is a high pressure sodium (HPS) light. Although the soft orange glow is preferable for our eyes over the harsh white glow of new LED streetlights, the HPS light uses more energy. These are a type of gas-discharge light where a gas mixture is ignited by an electric discharge. While these lights last around 24,000 hours, when they start to burn out, it takes more energy to light them. Cities are now beginning to replace HPS lights with LED lights which offer tremendous cost savings. However it is quickly becoming apparent that LED lights are not the heroes we make them out to be.

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