Light pollution isn't just bad for stargazing: Why some towns are embracing darkness
There are currently 38 official Dark Sky Communities around the world. Here's why they matter.

Dark skies are good for people and the planet.
In the 17th century, the wealthy people of Scotland would escape to the small town of Moffat for its healing sulfurous springs. Today, people appreciate Moffat for another kind of healing escape…into darkness.
That's right. The healing power of the dark of night is a thing, not only for people but for the planet.
If you've ever had the bounty of sitting out under the stars far away from city lights, you know how magical it can be to gaze at the night sky, but there are benefits to natural darkness that go far beyond enjoying the aesthetic beauty of space. That's the premise behind Dark Sky Communities.
Moffat became an official Dark Sky Community in 2016 after it invested in changing the town's lighting to prevent light pollution. Now it's an ideal place for stargazing, with a community observatory housing a state-of-the-art telescope and townspeople dedicated to preserving the night sky. Moffat was one of the first Dark Sky Communities in Europe and is one of just 38 around the world as of January 2023.
What exactly is a Dark Sky Community and why does it matter?
The International Dark-Sky Association (IDA) began designating places around the world, from natural environments to cities and towns, as Dark Sky Places in 2001 as a way of recognizing "excellent stewardship of the night sky." Dark Sky Places preserve and protect the dark through responsible lighting policies and public education about the importance of reducing light pollution. A Dark Sky Community is a legally organized city or town that adopts outdoor lighting ordinances that reduce light pollution and undertakes efforts to educate residents about the importance of dark skies.
Darkness matters—a lot. Not only does light pollution make it harder to see the beauty of the night sky, but it also has a negative effect on wildlife and ecosystems. Many animals, from insects to migratory birds to nocturnal animals rely on the natural rhythm of sunlight and darkness, and artificial light can disrupt their natural behaviors, sometimes to deadly effect. Light pollution also has a detrimental impact on plants, disrupting the circadian rhythm of certain pollinators and leading to reduced plant-pollinator interactions.
Too much artificial light at night can impact human health as well, as light messes with our own circadian rhythms. It's also just a waste of energy when lights are left on unnecessarily. The IDA estimates that around 30% of outdoor lighting is wasted, just in the U.S. alone. The Artificial Light at Night (ALAN) Research Literature Database provides a wealth of scientific literature on all aspects of artificial light at night research.
But as much as science tells us about the importance of reducing light pollution, there's also what the IDA refers to as our "night sky heritage."

The night sky has inspired scientists and poets alike throughout human history.
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The IDA website explains:
"Until recently, for all of human history, our ancestors experienced a sky brimming with stars—a night sky that inspired science, religion, philosophy, art and literature, including some of Shakespeare’s most famous sonnets.
The natural night sky is our common and universal heritage, yet it’s rapidly becoming unknown to the newest generations.
Van Gogh painted his famous “Starry Night” in Saint Rémy, France, in 1889. Now, the Milky Way can no longer be seen from there. If he were alive today, would he still be inspired to paint “Starry Night”?
Experiencing the night sky provides perspective, inspiration, and leads us to reflect on our humanity and place in the universe. The history of scientific discovery and even human curiosity itself is indebted to the natural night sky.
Without the natural night sky we could not have:
- Navigated the globe
- Walked on the Moon
- Learned of our expanding universe
- Discovered that humans are made of stardust"
Our relationship with natural darkness is both practical and poetic, but in a world full of lights and screens, most of us probably don't it as much thought or care as we should. That's the whole purpose of naming and certifying Dark Sky Places.
The IDA shares that as of January 2023, there are 201 certified Dark Sky Places in the world, including 115 Parks, 38 Communities, 20 Reserves, 16 Sanctuaries, 6 Urban Night Sky Places, and 6 Dark Sky Friendly Developments of Distinction.
You can find the list of Dark Sky Communities here and an interactive map of all official Dark Sky Places here.
Let's all do our part to turn off lights and limit light pollution for the good of people and our planet.
- What happens during the long, dark periods of the Arctic winter months? A lot more than we thought. ›
- Researchers at Stanford University have created solar panels that generate power at night ›
- Only 1% of all Americans get to experience this incredible sight. ›
- Cloud shapes are changing due to climate change - Upworthy ›
- Beavers return to Scotland's Glen Affric after 400 years - Upworthy ›



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An Irish woman went to the doctor for a routine eye exam. She left with bright neon green eyes.
It's not easy seeing green.
Did she get superpowers?
Going to the eye doctor can be a hassle and a pain. It's not just the routine issues and inconveniences that come along when making a doctor appointment, but sometimes the various devices being used to check your eyes' health feel invasive and uncomfortable. But at least at the end of the appointment, most of us don't look like we're turning into The Incredible Hulk. That wasn't the case for one Irish woman.
Photographer Margerita B. Wargola was just going in for a routine eye exam at the hospital but ended up leaving with her eyes a shocking, bright neon green.
At the doctor's office, the nurse practitioner was prepping Wargola for a test with a machine that Wargola had experienced before. Before the test started, Wargola presumed the nurse had dropped some saline into her eyes, as they were feeling dry. After she blinked, everything went yellow.
Wargola and the nurse initially panicked. Neither knew what was going on as Wargola suddenly had yellow vision and radioactive-looking green eyes. After the initial shock, both realized the issue: the nurse forgot to ask Wargola to remove her contact lenses before putting contrast drops in her eyes for the exam. Wargola and the nurse quickly removed the lenses from her eyes and washed them thoroughly with saline. Fortunately, Wargola's eyes were unharmed. Unfortunately, her contacts were permanently stained and she didn't bring a spare pair.
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Since she has poor vision, Wargola was forced to drive herself home after the eye exam wearing the neon-green contact lenses that make her look like a member of the Green Lantern Corps. She couldn't help but laugh at her predicament and recorded a video explaining it all on social media. Since then, her video has sparked a couple Reddit threads and collected a bunch of comments on Instagram:
“But the REAL question is: do you now have X-Ray vision?”
“You can just say you're a superhero.”
“I would make a few stops on the way home just to freak some people out!”
“I would have lived it up! Grab a coffee, do grocery shopping, walk around a shopping center.”
“This one would pair well with that girl who ate something with turmeric with her invisalign on and walked around Paris smiling at people with seemingly BRIGHT YELLOW TEETH.”
“I would save those for fancy special occasions! WOW!”
“Every time I'd stop I'd turn slowly and stare at the person in the car next to me.”
“Keep them. Tell people what to do. They’ll do your bidding.”
In a follow-up Instagram video, Wargola showed her followers that she was safe at home with normal eyes, showing that the damaged contact lenses were so stained that they turned the saline solution in her contacts case into a bright Gatorade yellow. She wasn't mad at the nurse and, in fact, plans on keeping the lenses to wear on St. Patrick's Day or some other special occasion.
While no harm was done and a good laugh was had, it's still best for doctors, nurses, and patients alike to double-check and ask or tell if contact lenses are being worn before each eye test. If not, there might be more than ultra-green eyes to worry about.