Category: Responsible outdoor lighting | Page 7 | DarkSky International

Why is Blue Light at Night Bad?

Uncategorized

The Harvard Health Publications article, “Blue light has a dark side,” describes artificial lighting that emits the blue color …

December 22, 2016

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

5 Popular Myths About LED Streetlights

Light Pollution

The rapid changes in LED lighting technology have given rise to an LED retrofit revolution. Across the globe, municipalities …

September 8, 2016

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

Really, really bad lighting

Outdoor Lighting

Good lighting is used only when needed, only where needed, in only the amount needed, and shielded so that …

July 26, 2016

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

Be Part of the Global Debate On LEDs

LEDs

For the past five years, IDA has sounded the alarm about the environmental and health impacts of blue-rich white …

June 22, 2016

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

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

Light Pollution

A groundbreaking new study documenting light pollution across the globe finds that more than 80 percent of the world’s …

June 10, 2016

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

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

Uncategorized

By guest writer Chris Kyba North Korea is famously dark compared to South Korea and China at night, and …

May 18, 2016

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

Light Pollution

Lighting demonstration by Keith Kreuger, IDA Pinal County (Arizona) Chapter Leader, illustrating the difference between a bare bulb and …

April 8, 2016

IDA Publishes in LED Professional magazine

Light Pollution

IDA is excited to announce the publication of our ‘special topic’ article “The Value of Dark Skies – About …

March 30, 2016

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

City Lights from Space

Light Pollution

It’s no secret that city lights are brighter than starlight. Almost everyone, from amateur stargazers to professional astronomers, has …

March 29, 2016

Arizona E-Billboard Expansion Defeated

Outdoor Lighting

We are pleased to announce the defeat of Arizona House Bill 2507, which would have expanded the allowable range …

March 15, 2016

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

How to Enact a Lighting Ordinance

Outdoor Lighting

By Guest Writer Bob Gent Many of us are aware of the serious problems from light pollution. Blinding glare …

December 30, 2015

Lessons from the retrofit revolution

Light Pollution

A recent news article draws attention to a new street lighting project just completed in downtown Philadelphia, Pennsylvania. This …

December 17, 2015