Chad
Chad is the country identified as having the least light pollution of all global locations, awarding it the most pristine night skies.10 Simple Ways to Reduce Light Pollution
- #1 Turn Off Lights When Not in Use.
- #2 Use Fewer Lights When Inside.
- #3 Keep the Blinds and Drapes Closed at Night.
- #4 Avoid Driving at Night.
- #5 Turn Off All Lights When Going to Sleep.
- #6 When Going Outside, Point Your Lights Towards the Ground.
Light pollution, or artificial light at night, is the excessive or poor use of artificial outdoor light, and it disrupts the natural patterns of wildlife, contributes to the increase in carbon dioxide (CO2) in the atmosphere, disrupts human sleep, and obscures the stars in the night sky.
When did light pollution start : The issue of light pollution was first recognised in the 1970s, when astronomers began to see the impact of the rapid increase in artificial light on their work. At this time, the sky is estimated to have been becoming brighter by between three and six percent every year.
Where is light pollution the lowest
Due to its incredibly remote location in the far southwest corner of the large state of Texas, Big Bend National Park has some of the darkest skies in the whole USA. In fact, it has the lowest levels of light pollution of any other national park unit in the lower 48 states (there are over 400 of them).
Which country is the most pollution free : Australia topped the list as the least polluted country in the world, with 6 cities in the top 25. Of the 25 least polluted cities in the world with the best air quality, Nordic countries (Finland, Sweden, Norway, Iceland) dominated the rankings with some of the cleanest air in the world in 2024.
It is most severe in highly industrialized, densely populated areas of North America, Europe, and Asia and in major cities in the Middle East and North Africa like Tehran and Cairo, but even relatively small amounts of light can be noticed and create problems.
Dimmers, motion sensors, and timers can help to reduce average illumination levels and save even more energy. Outdoor lighting fixtures that shield the light source to minimize glare and light trespass help prevent light pollution.
Can light pollution be reversed
Unlike many other forms of pollution, light pollution is reversible and there are measures we can take to restore the deep darkness of the sky. “There are lots of ways to reduce the amount of light pollution that we put out into the sky,” says Ms Banks. “One good example is by creating very directional streetlights.Many studies have shown that exposure to artificial light at night negatively affects human health, including increased risk for: Sleep disorders. Depression. Obesity.Too much natural light…can make a space look sterile.
Too much natural light can drain the warmth out of a room, making it feel more like a doctor's office waiting area than a comfortable, inviting space.
Take a look at the top 15 least light-polluted destinations in Europe below:
- Romania.
- Ireland.
- Austria.
- Denmark.
- Slovakia.
- Hungary.
- Slovenia.
- Croatia.
Where is the clearest sky on Earth : American Southwest. Not only is the American Southwest home to a vast desert landscape, but it's also home to some of the best stargazing in the world. With extremely minimal light pollution and high altitude, the region has some of the clearest skies in the world.
Where is the cleanest air in Europe : Iceland is the country in Europe with the highest air quality.
- This is the stated in a new report from the Swiss-based IQAir Institute, which draws on data from weather stations in 134 countries in the last year.
- WHO sets a limit of 5 micrograms of these particles per cubic meter of air every year.
What is the least polluted city in Europe
Faro
Faro, the capital of Portugal's Algarve region, was the least polluted city in Europe based on levels measured in 2021 and 2022.
Due to its incredibly remote location in the far southwest corner of the large state of Texas, Big Bend National Park has some of the darkest skies in the whole USA. In fact, it has the lowest levels of light pollution of any other national park unit in the lower 48 states (there are over 400 of them).Myth #1: The use of LEDs reduces light pollution and is “good for dark skies” because they're highly energy efficient. Yes, LEDs are more energy-efficient, but that fact can ironically lead to more light as cities spend the money saved on reduced electricity use to buy more lighting.
Does artificial light age you : There isn't an exact amount of blue light that is known to cause skin cell damage. However, research does show that being exposed to 12 hours a day of blue light is likely to accelerate aging, possibly even with skin cell damage. This could lead to wrinkles and skin blemishes earlier on in life.