Light is Energy: Estimating the Impact of Light Pollution on Climate Change

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The classic image of the world at night shows the light from countless bulbs pouring into space. By definition, the light reaching a VIIRS night band sensor, flown on satellites orbiting at 824 kilometers elevation… Read more

Lights at the Border: Protecting Some of the Darkest Places in North America

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In the United States, few locations remain where the night is naturally dark. One of these is stretches of the southern border between the United States and Mexico. In April 2022, the Greater Big Bend… Read more

Artificial Light at Night: State of the Science 2022 Report

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by John Barentine Dark Sky Consulting, LLC To confront problems effectively, we must understand them. And to tackle the problem of light pollution around the world, we must become familiar with the knowns and the… Read more

Highlights from Under One Sky 2021

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This year, we brought you our second annual Under One Sky Global Conference, and you definitely showed up! In fact, we had 800 unique attendees from 61 different countries–making this the largest gathering of dark… Read more

Check out the Newly Redesigned Nightscape Magazine!

Cover of Nightscape #105

We are delighted to bring you a sneak peek of the digital version of the newly redesigned Nightscape magazine, Summer 2021 edition, #105. Nightscape is our award-winning publication, that provides current news about the International… Read more

A Farewell From Dr. John Barentine

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The old saying in English that “all good things must come to an end” is trite but true. The good things that have filled my professional life while working for IDA as a member of… Read more

Vision and Values Update: Toward a More Equitable Dark Sky Movement

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One year ago, IDA issued a statement centered on aspiring toward a more equitable dark sky movement. Like many of our peers, the events of 2020 not only demonstrated the need for reconciliation and reform… Read more

Fixture Seal of Approval Program Expands Global Presence

Fixture Seal of Approval Fixtures mounted on the exterior of a building and pointing warm light downward.

Since its inception in 2002, IDA’s Fixture Seal of Approval Program has provided certification for dark sky-friendly lighting that minimizes glare, reduces light trespass, and doesn’t pollute the night sky. These dark sky-friendly fixtures provide… Read more

Welcome to the IDA’s new Directors and Officers!

IDA Board of Directors 2021

We hope that you will join us in welcoming these new additions to the International Dark-Sky Association Board of Directors!   Our New Board Officers: Diane Knutson, President | USA A pivotal moment occurred in… Read more

Toward an Equitable Dark Sky Movement

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The following statement was approved by the IDA Board of Directors on June 11, 2020. Black lives matter.  The brutal killing of George Floyd, the racist reaction to black birder, Christian Cooper in Central Park… Read more