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How Light Pollution Affects the Pennsylvanian Ecosystem

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By guest writer, Craig Campbell As little as 100 years ago, it was possible to look up in the sky at night and see millions of stars spread across the Milky Way. Now, there are… Read More

Call for Abstracts for the 2018 Annual General Meeting

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Looking Up! 30-Years of Dark Sky Advocacy IDA’s 30th Annual General Meeting November 9-11, 2018 | Snowbird, Utah The International Dark-Sky Association is pleased to invite you to the 30th Annual General Meeting which will… Read More

Can Salmon Help Save the Night Sky?

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“Salmon could help save the night sky,” says Jack Sales, Chapter leader of IDA California. Sales is concerned about many environmental issues near Sacramento, including the decline of salmon populations. Sales says that learning about… Read More

IDA Announces Criteria for Community-Friendly Outdoor Sports Lighting

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IDA’s mission is to preserve and protect the nighttime environment and our heritage of dark skies through environmentally responsible lighting. The need for environmentally responsible outdoor lighting that balances the human need for light with… Read More

Call for New Members for the International Dark-Sky Association Technical Committee

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The International Dark-Sky Association Technical Committee provides guidance to the IDA Board, Executive Director, and staff on policies and guidelines related to outdoor lighting practices. This highly skilled team of lighting specialists and environmental scientists… Read More

West Nile Virus Infectious Longer in Birds Exposed to Artificial Light at Night

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Artificial light at night doesn’t just affect our ability to see the stars — it also impacts complex ecological interactions and disease transmission factors, with the potential to have profound effects on human health.   What… Read More

New Zealand Night Sky Enthusiasts Protect the Dark

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Martinborough, New Zealand, is highly regarded internationally for producing fine wines, olive oil and food within a rural environment of outstanding natural beauty. For some time, the community has enjoyed breathtakingly clear views of the… Read More

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 that light at night is getting brighter. The rate of growth is approximately two percent each… Read More

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 light into the sky as an annual memorial to the victims of 9/11. The tribute also… Read More

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

The nighttime environment is a crucial natural resource for all life on Earth, but the glow of uncontrolled outdoor lighting has hidden the stars, radically changing the nighttime environment. International Dark Sky Week draws attention… Read More