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Call to Action! Contact Chicago’s Administration to Demand a Responsible Outdoor Lighting Plan

Call to Action! Contact Chicago’s Administration to Demand a Responsible Outdoor Lighting Plan Thumbnail

IDA’s Executive Director, Scott Feierabend has sent an urgent letter to Chicago’s Mayor, Rahm Emanuel’s regarding the proposed outdoor lighting plan. This letter urges Emanuel and his Administration to choose a safe, responsible outdoor lighting… Read More

Why is Blue Light at Night Bad?

Why is Blue Light at Night Bad? Thumbnail

New technical capabilities often come with unanticipated challenges. White LED lighting often has much higher levels of potentially harmful blue light. In 2010, IDA published its paper, “Visibility, Environmental, and Astronomical Issues Associated with Blue-Rich White… Read More

5 Popular Myths About LED Streetlights

Streetlights on city street at night create glare making it hard to see.

The rapid changes in LED lighting technology have given rise to an LED retrofit revolution. Across the globe, municipalities are opting to switch out their older street lighting to new, more energy-efficient LEDs. Unfortunately, these… Read More

Really, Really Bad Lighting

An "acorn" outdoor street light at night gives off a lot of glare because it's not shielded.

We’ve all seen examples of good and bad lighting, but every once in a while there’s an example of lighting that is extremely bad. We present to you four examples of the some of the… Read More

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

IDA Publishes in LED Professional magazine Thumbnail

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