Responsible outdoor lighting

What is light pollution?

Resources

Light pollution is the human-made alteration of outdoor light levels from those occurring naturally. When we over-light, fail to …

October 4, 2024

Our positions and statements

Policy

DarkSky’s positions and statements address critical issues related to light pollution and dark skies, guiding our priorities, communications, advocacy …

June 17, 2026

Outdoor Sports Lighting Program

What we do

Thanks to advances in LED lighting technology, lighting designers now have the tools to create projects that effectively manage …

August 4, 2026

Responsible Outdoor Lighting at Night (ROLAN) manifesto for lighting

Responsible outdoor lighting

By following the ROLAN manifesto, governments, businesses, and individuals can support the implementation of the United Nations sustainable development …

December 19, 2022

Retrofit Gone Right: Q&A with Tim Brothers

Outdoor Lighting

Get to know Vice President of IDA Massachusetts, Tim Brothers — an observatory manager who successfully advocated for and …

August 29, 2022

International Dark Sky Places program advocacy — A review of 2020–2021 Annual Reports

Light Pollution

International Dark Sky Place advocates showcase a diversity of creative and engaging ways to promote the dark-sky movement in …

June 3, 2022

Register Now for the Responsible Outdoor Lighting at Night Conference (ROLAN 2022)

Light Pollution

ROLAN 2022 is a two-day online conference taking place May 12-13, 2022 with live panel discussions about the topic …

March 30, 2022

Fixture Seal of Approval Program Expands Global Presence

LEDs

Over the last few years IDA’s Fixture Seal of Approval Program has made significant progress including 12 companies around …

May 19, 2021

A Values-Centered Approach to Nighttime Conservation

Outdoor Lighting

IDA’s Board of Directors adopted a Policy implementing the Five Principles for Responsible Outdoor Lighting on January 28, 2021. …

March 23, 2021

Report from Tokyo: The Great Achievement of a Small Island

Outdoor Lighting

Before and after of the lighting retrofit in Kozushima, Japan with aim of becoming an International Dark Sky Place.

November 30, 2020

Experiment uses smart city lighting to measure streetlight emissions

Press release

When satellites take pictures of Earth at night, how much of the light that they see comes from streetlights? …

October 28, 2020

It’s Earth Day! Is your home lighting nature, neighbor and night sky friendly?

Outdoor Lighting

What better way to celebrate Earth Day (and Night!) than by making your home dark sky friendly?

April 22, 2020