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Be Part of the Global Debate On LEDs

Light pollution in New York City. Photo by Jim Richardson.

For the past five years, IDA has sounded the alarm about the environmental and health impacts of blue-rich white light-emitting diode (LED) street lighting that is replacing older technologies in cities across the globe. Recently… Read More

80% of World Population Lives Under Skyglow, New Study Finds

World map of artificial sky brightness. Image from the new "World Atlas of Artificial Night Sky Brightness."

A groundbreaking new study documenting light pollution across the globe finds that more than 80 percent of the world’s population lives under light polluted skies. The United States and Europe have it even worse, with… Read More

Night Lights and Prosperity Don’t Always Go Hand in Hand

Photo ISS043-E-247811 of North and South Korea from the International Space Station ISS.

By guest writer Chris Kyba North Korea is famously dark compared to South Korea and China at night, and images like the one above are often used to demonstrate the consequences of its “unenlightened” policies. I certainly wouldn’t… Read More

Learn why you shouldn’t bare your bulbs! Watch now…

Learn why you shouldn’t bare your bulbs! Watch now… Thumbnail

Lighting demonstration by Keith Kreuger, IDA Pinal County (Arizona) Chapter Leader, illustrating the difference between a bare bulb and a shielded bulb. Cover your bare bulbs! No one likes to look at a bare light… Read More

IDA Publishes in LED Professional magazine

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IDA is excited to announce the publication of our ‘special topic’ article “The Value of Dark Skies – About Environmentally Friendly Lighting” in the March/April issue of LED Professional magazine. We are always trying to reach industry… Read More

City Lights from Space

A satellite image of Las Vegas showing a sea of lights.

It’s no secret that city lights are brighter than starlight. Almost everyone, from amateur stargazers to professional astronomers, has experienced how hard it can be to see the stars when they are eclipsed by the… Read More

Arizona E-Billboard Expansion Defeated

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We are pleased to announce the defeat of Arizona House Bill 2507, which would have expanded the allowable range of electronic billboards in the state. Sponsored by State Rep. Sonny Borrelli of Lake Havasu City… Read More

How to Enact a Lighting Ordinance

A picture of the word "ordinance" in the dictionary.

By  Guest Writer Bob Gent Many of us are aware of the serious problems from light pollution. Blinding glare is a safety problem, light in your bedroom window disrupts sleep, bright lights disorient wildlife, there… Read More

Lessons from the Retrofit Revolution

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A recent news article draws attention to a new street lighting project just completed in downtown Philadelphia, Pennsylvania. This retrofit included replacing hundreds of high-pressure sodium lights with new, more energy-efficient, white LEDs. Philadelphia officials had good intentions in deploying… Read More

City’s LED Retrofit Shows Need For Careful Lighting Choices

A neighborhood on a lake with tall trees reflected in the water.

By Guest Author Jim Benya The initial LED streetlight installation went awry, but this story has a happy ending Davis, California, is a small city adjacent to a large university. The city has a well-educated… Read More