Helena Joyce
Light pollution is a pressing issue that has harmful effects on the environment, wildlife, and our quality of life. It is caused by the excessive or inappropriate use of outdoor artificial light, and it disrupts natural body rhythms in both humans and animals. As someone who grew up gazing at the Milky Way, I was dismayed to find that artificial skyglow had obscured it from view for my daughter. Determined to protect my hometown's night sky, I embarked on a journey to combat light pollution. I soon realized that most light pollution is unnecessary and preventable, often resulting from careless waste and poor lighting practices. By educating my community and working with local officials, we successfully passed lighting ordinances to reduce light pollution. In this narrative, I will share the steps I took to beat light pollution in my hometown, in the hope that others can do the same.
| Characteristics | Values |
|---|---|
| Reason for reducing light pollution | To protect the night sky and improve visibility of the Milky Way |
| Methods | Using pre-printed postcards to encourage people to contact local lawmakers and request action |
| Sharing information from the International Dark-Sky Association | |
| Presenting slides of good and bad lighting practices to the Planning and Zoning Commission | |
| Using dimmer bulbs, motion sensors, timers, and shields to minimize glare | |
| Turning off lights when not in use | |
| Pointing flashlights and headlights downwards | |
| Reducing screen brightness on electronic devices | |
| Impact | Improved night sky visibility |
| Reduced energy costs | |
| Increased awareness of light pollution beyond the local community |
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What You'll Learn
- Raising awareness and educating the community about light pollution
- Encouraging the adoption of outdoor-lighting laws and regulations
- Promoting responsible lighting practices, such as using shielded fixtures and dimmers
- Supporting organisations like DarkSky International and the International Dark-Sky Association
- Using tools like the Radiance Light Trends website to monitor light emissions and pollution levels
Raising awareness and educating the community about light pollution
Light pollution is a human-made alteration of outdoor light levels from those occurring naturally. It has harmful effects on the environment, wildlife habitats, and our quality of life. To beat light pollution in your hometown, raising awareness and educating the community about its harmful effects is crucial. Here are some ways to do that:
Educate the Community:
- Spread awareness about the harmful effects of light pollution on human health, wildlife, and the environment. Explain how artificial light at night can disrupt natural body rhythms in both humans and animals, impacting their well-being.
- Inform the community about the benefits of reducing light pollution, such as restoring the natural night sky, protecting wildlife, and improving energy efficiency.
- Teach people about responsible outdoor lighting practices, such as using warmer colours, only lighting areas where needed, and keeping lights no brighter than necessary.
- Organise stargazing sessions or astronomy-related events to help people appreciate the beauty of a natural night sky free from light pollution.
Collaborate with Local Authorities:
- Work with your town's planning and zoning commission to implement and enforce lighting ordinances that reduce light pollution. Advocate for well-designed lighting regulations that are both functional and environmentally friendly.
- Collaborate with local lawmakers to adopt outdoor lighting laws that address poor lighting practices, such as excessive brightness or improper aiming of lights.
- Engage with lighting designers and planners to find solutions that balance lighting needs with environmental considerations.
Utilise Resources and Organisations:
- Reach out to organisations dedicated to reducing light pollution, such as Dark Sky International or the International Dark Sky Association (IDA). These organisations provide resources, education, and support for communities aiming to minimise light pollution.
- Utilise pre-printed postcards or online petitions to gather community support for light pollution reduction initiatives and present them to local authorities.
- Share success stories and best practices from other communities that have successfully tackled light pollution to inspire and educate your hometown.
Remember, raising awareness and educating your community is a powerful tool in combating light pollution. By understanding the issue and knowing how to make a change, your hometown can take meaningful steps towards preserving the night sky and protecting the environment.
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Encouraging the adoption of outdoor-lighting laws and regulations
Light pollution is a human-made alteration of outdoor light levels from those occurring naturally. It has harmful effects on human health, wildlife behaviour, and our ability to observe stars and other celestial objects. The excessive or inappropriate use of outdoor artificial light is affecting human health, wildlife behaviour, and our ability to observe stars and other celestial objects.
To beat light pollution in your hometown, encouraging the adoption of outdoor-lighting laws and regulations is key. Here are some ways to do that:
Educate Yourself and Others
Learn about the harmful effects of light pollution and share this knowledge with your community. Organisations like DarkSky International provide resources and information sheets to help spread awareness. Educating people about the negative impacts of light pollution on health, the environment, and astronomy can help build support for change.
Advocate for Lighting Ordinances
Work with local authorities, planning commissions, and zoning associations to propose and advocate for lighting ordinances that address light pollution. Contact your town lawmakers and express your concerns about light pollution, requesting their attention and action. Provide scientific data and success stories from other cities that have implemented similar measures.
Engage the Community
Get involved in local stargazing sessions, public events, and community gatherings to spread awareness. Make it easy for concerned citizens to reach out to lawmakers by providing pre-addressed, pre-printed postcards. This way, even those unfamiliar with local politics can participate in advocating for change.
Provide Visual Evidence
During public hearings or meetings with town planners, present visual evidence of poor and good lighting practices in your town. Slideshows or photographs of blinding floodlights and well-shielded lighting installations can help illustrate the problem and potential solutions. Show the difference between shielded and unshielded fixtures and how it impacts visibility and glare.
Emphasise the Benefits
When advocating for lighting regulations, highlight the benefits for all stakeholders. Explain how responsible lighting leads to better nighttime visibility, reduced energy costs, and less intrusive light installations. Emphasise that most people want to do the right thing, and by adopting better lighting practices, they can positively impact the environment and their community.
By following these steps and staying involved, you can effectively encourage the adoption of outdoor-lighting laws and regulations in your hometown, protecting the night sky and improving the well-being of your community and the environment.
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Promoting responsible lighting practices, such as using shielded fixtures and dimmers
Light pollution is a human-made alteration of outdoor light levels from those occurring naturally. It has harmful effects on streetlights, greenhouses, and satellites, among other sources. Light pollution is harmful to the environment, wildlife habitats, and our quality of life. It is important to promote responsible lighting practices to reduce light pollution.
One way to promote responsible lighting practices is by using shielded fixtures. Light shields are accessories that can be attached to the top and/or sides of light fixtures. They focus light downward or inward, preventing it from spreading in unwanted directions. Shields also provide benefits such as glare reduction and improved night vision. Fixtures with shields reduce the likelihood of stray light affecting nearby areas and limit upward light trespass.
Another way to promote responsible lighting practices is by using dimmers. Dimmers reduce the intensity of light and allow for using less light overall. Using dimmers can also help reduce energy costs at home. LEDs with lower color temperatures produce a warmer, amber light that reduces glare and limits the impact on nocturnal animals.
By using shielded fixtures and dimmers, light pollution can be reduced, and a cleaner and more beautiful night sky can be enjoyed by all. These responsible lighting practices also help preserve natural environments and enhance nighttime visibility.
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Supporting organisations like DarkSky International and the International Dark-Sky Association
DarkSky International
DarkSky International, formerly known as the International Dark-Sky Association (IDA), is a non-profit organisation founded in 1988 by a professional astronomer, David Crawford, and a physician and amateur astronomer, Tim Hunter. The organisation's mission is to "preserve and protect the night time environment and our heritage of dark skies through quality outdoor lighting."
DarkSky International aims to raise awareness about the value of dark, starry night skies and encourages their protection and restoration. They work with communities, manufacturers, retailers, designers, and governments to evaluate and certify dark sky-friendly outdoor lighting equipment and projects. Their DarkSky Approved program helps certify lighting products, designs, and installations that reduce light pollution.
The organisation also has an International Dark Sky Places program that encourages communities, parks, and protected areas worldwide to preserve and protect dark sites through responsible lighting policies and public education. There are various designations for these places, including Dark Sky Sanctuaries, Dark Sky Parks, Dark Sky Reserves, Dark Sky Communities, and Urban Night Sky Places.
To get involved with DarkSky International, you can:
- Find your local chapter: DarkSky International has over 60 international chapters at the forefront of the dark sky movement.
- Join their email list: Receive their monthly newsletter and stay updated on international dark sky news and action alerts.
- Support their advocacy and education efforts: Your support helps fund their advocacy, education, and certification initiatives.
International Dark-Sky Association (IDA)
Although now known as DarkSky International, the International Dark-Sky Association (IDA) was instrumental in providing resources and information to combat light pollution. Their information sheets helped convince town planners of the benefits of good lighting regulations.
By supporting similar organisations like the IDA, you can gain valuable knowledge about light pollution and effective lighting practices. This knowledge can then be shared with your community and local government to implement positive changes.
In summary, supporting organisations like DarkSky International and the former International Dark-Sky Association is crucial in the fight against light pollution. By raising awareness, advocating for change, and educating communities, we can protect our night skies and preserve the environment for future generations.
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Using tools like the Radiance Light Trends website to monitor light emissions and pollution levels
The Radiance Light Trends website is a useful tool for monitoring light emissions and pollution levels. The website, developed as part of the GEOEssential project, presents a world map that shows where night skies are still relatively dark and where there are hotspots of artificial light pollution. The map incorporates data from spy satellites that operated from 1992 to 2013, allowing users to zoom in on specific regions and observe how light emissions have changed over time.
The website is the result of an effort to understand how artificial light and "skyglow" produced by cities are changing over time. It is designed to be accessible to both scientists and the general public, with the aim of providing everyone in the world with access to satellite data. The data underlying the Radiance Light Trends app comes from two satellite instruments run by various government agencies in the USA over the last several decades. For the period 1992 to 2013, data is sourced from the Operational Linescan System of the Defense Meteorological Satellite Program (DMSP) satellites.
Users can observe light trends and the development of light pollution for nearly any site or region in the world. For example, the app shows a clear drop in light pollution over Tucson International Airport in Arizona, where hundreds of outdoor lights were replaced between August and October 2014 to reduce energy consumption and light pollution. Another example is light leakage from a large greenhouse about 350 kilometers southwest of Moscow, which has been lighting up the night sky since 2015.
The Radiance Light Trends app has simplified the process of analyzing trends in light emissions for a specific region. According to Christopher Kyba, a physicist at the German Research Centre for Geosciences in Potsdam who coordinated the development of the website, it now takes less than a minute for someone with no special training to produce a chart showing light trends. Previously, this task would have taken a full day, requiring specialist knowledge of geographic information system software to select and analyze a region.
The website also provides information on light pollution's effects on humans and nighttime ecosystems. Kyba plans to make the website's code available for free so that similar tools can be created using different data sets from satellites.
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Frequently asked questions
Light pollution is the human-made alteration of outdoor light levels from those occurring naturally. It has harmful effects on health, wildlife, and our quality of life.
I started by devising a way for people to send a message to local lawmakers. I handed out pre-addressed, pre-printed postcards at local events, expressing concern about light pollution and requesting action. I also did some research using the resources of the International Dark-Sky Association. I then met with the town planner and convinced her that good-lighting regulations would benefit everyone.
Some ways to reduce light pollution include:
- Using window shades to keep room lights from escaping your house.
- Reducing the use of devices in the evening.
- Using flashlights or headlights outside at night and pointing them down to the ground.
- Using low watt bulbs and moving away from bluish-white lighting.
- Turning off lights when not in use.
Light pollution makes it difficult for astronomers to observe and photograph the night sky. It also disrupts the behaviour of plants and animals, which evolved in a world without artificial light.
