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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

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 to Jeffrey C. Hall, Michael Rosbash and Michael W. Young “for their discoveries of molecular mechanisms… Read More

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

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

If you are on or near the centerline of the path of totality during the solar eclipse on August 21, 2017, you are able to participate in an activity to observe and record the faintest stars visible as a… Read More

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 to spread their pollen, but most depend on animals for pollination. Insects like bees, moths, and… Read More

Like moths to a flame: National Moth Week, and how you can help our nighttime wildlife

Like moths to a flame: National Moth Week, and how you can help our nighttime wildlife Thumbnail

Next week, as night falls, people across the USA and around the world will be found huddled in groups, waiting, staring into bright light sources. This is not some strange cult or ritual; in fact… Read More

The Psychology of Dark Skies

An aerial photo of Sark, Channel Islands.

By Guest Writer Ada Blair I’ve been a regular visitor to the Isle of Sark since 2010 when a close friend of mine moved there. Sark, at only 5.5 square kilometres, is the smallest of the… Read More

Grad Student Helps Acadia with Dark Sky Bid

Three people sit looking over the water at Acadia National Park. The night sky is filled with star and you can see a hint of he Milky Way.

Guest post by Locher Grove It’s not easy to find dark skies along the East Coast of the continental United States.  Development and expansion have increased light pollution along the seaboard, disrupting ecosystems and stargazing. … Read More

What Do Dark Skies Mean to You?

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Guest Post by Emma Marrington, senior rural policy campaigner for Campaign to Protect Rural England (CPRE) When was the last time you experienced a truly dark, star-filled night sky, even in the countryside? Or saw the… Read More

Three Surprising Creatures Affected by Light Pollution

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Every year we see lots of new research on the effect of artificial light at night on various types of wildlife. Many of us know of the impact of light pollution on wildlife such as… Read More

AMA Report Affirms Human Health Impacts from LEDs

This photo shows the divide between East and West Berlin that is still visible at night from space. On the left are the gas lamps of the West and on the right, the orange high-pressure sodium lamps of the East, with a stark contrast between them. The image is a powerful reminder that lighting choices made by city planners are long lasting.

A groundbreaking report recently released by the American Medical Association (AMA) Council on Science and Public Health affirms known and suspected impacts to human health and the environment caused by light emitting diodes (LEDs) that… Read More