Light Pollution

Study Links Artificial Light at Night and Cancer Risk

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A recent study published in Environmental Health Perspectives investigated the relationship between artificial light at night (ALAN) in Spain …

June 14, 2018

Restless Idealism and the Night Sky

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Holiday River Expeditions—a rafting and biking tour outfit in Utah—in partnership with Clark Planetarium, has been digging deeper into …

March 19, 2018

Five Years of Satellite Images Show Global Light Pollution Increasing at a Rate of Two Percent Per Year

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Five years of advanced satellite images show that there is more artificial light at night across the globe, and …

November 22, 2017

Bird Migration Dramatically Altered by High-intensity Urban Light Installation

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By: Meg Schader for the International Dark-Sky Association Tribute in Light in New York City projects two beams of …

October 18, 2017

Nobel Prize Awarded for Discovery of Molecular Mechanisms Controlling the Circadian Rhythm

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The Nobel Assembly at Karolinska Institute today announced the 2017 Nobel Prize in Physiology or Medicine is awarded jointly …

October 2, 2017

LEDs In Your Community Webinar

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Grassroots supporters from 15 countries joined IDA technical director, Pete Strasser, for a free webinar about LED lights, technology, …

September 5, 2017

Be a citizen-scientist: measure the darkness of a total solar eclipsed sky!

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If you are on or near the centerline of the path of totality during the solar eclipse on August …

August 17, 2017

Lights at Night Turn Nocturnal Pollinators Off

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Pollination is essential for the reproduction of many plant species. Some flowering plants rely on the wind or water …

August 7, 2017

“All Living Things on Earth Need and Deserve a Night Sky”

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Growing up on Norfolk Island in the South Pacific exposed me to one of the darkest and least light …

July 21, 2017

International Dark Sky Week: 5 Ways to Support Dark Skies Right Now

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The nighttime environment is a crucial natural resource for all life on Earth, but the glow of uncontrolled outdoor …

April 27, 2017

LIMITED EDITION IDA Poster by Tyler Nordgren

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Artist Tyler Nordgren, widely known for his classic images of the night sky and other wondrous landscapes, has generously …

April 17, 2017

SKYGLOW: Hunting the Dark

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Pursued in collaboration with the International Dark-Sky Association, SKYGLOW explores the history and mythology of celestial observation and the …

April 12, 2017