Let's Talk About Light Pollution

Be a Bright Light by Reducing Light Pollution

Did you know that 99% of people in Europe and the United States cannot experience natural light or stars at night due to light pollution?

Light pollution is the artificial brightening of the night sky as a result of street lighting and other man-made sources. It disrupts the natural rhythm of all living things in nature and has many other harmful impacts as well. Artificial lighting is having lethal effects on the world’s ecosystems as the rhythm of day and night is actually built into the DNA of plants and animals. Studies show artificial light increases the risk for some cancer, obesity, depression and other illnesses.

Do This 1-Click

When you reduce your use of nighttime artificial lighting, you are creating a safer environment for people, other animals, and the environment.

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See How Bad Light Pollution is in Your Area

Visit NASA's Blue Marble Navigator and search by zip code.
Blue Marble Navigator


  1. Only use artificial lighting if you really need it.
  2. If you need safety lighting, use motion sensor lights instead of leaving something on all night.
  3. In the evening, keep your blinds closed while using indoor lights.


Become a citizen scientist and help measure light pollution in your community with the Globe at Night Campaign.
Globe at Night Campaign
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