In a world increasingly illuminated by artificial light, the beautiful night skies of a small coastal town in South Australia have attracted international recognition. Carrickalinga on the Fleurieu Peninsula is Australia’s first official Dark Sky Community. The title rewards a dedicated community effort to combat light pollution and preserve the natural environment at night.
The journey began three years ago when I was a PhD candidate at the Australian National University, working on the value of night skies. I was a regular visitor to Carrickalinga, but this time conversations at a picnic one evening turned to the clarity and brilliance of the stars. I was inspired to work with the locals to nominate Carrickalinga as a “Dark Sky Place”.
My recent research suggests restoring dark skies would be worth US$3.4 trillion (A$5.16 trillion) to the world, annually. That’s largely because light pollution is disrupting nocturnal pollinators, altering predator-prey interactions, and changing the behaviours of nocturnal species.
Light pollution has detrimental effects on wildlife, human health, and ecosystem functions and services. But there are simple solutions. By embracing responsible lighting practices, everyone can contribute to a healthier future in which the wonders of the night sky are accessible to all.
Understanding light pollution
Light pollution refers to human alteration of outdoor light levels. Excessive or misdirected artificial light brightens the night sky, diminishing our ability to see stars.
Research shows the problem is getting worse. Light pollution increased by 7–10% a year from 2011 to 2022. More than a third of people on Earth cannot see the Milky Way.
Light pollution not only affects our view of the cosmos, but also wastes energy and money, contributes to climate change and has significant repercussions for both ecological and human health.
Nocturnal animals such as bats and certain birds rely on darkness to navigate and find food. Insects, crucial for pollination and as a food source for other wildlife, are also affected. Artificial light at night is contributing to their decline.
In humans, studies have shown artificial light interferes with circadian rhythms, leading to sleep disorders and other health issues.
The global Dark Sky movement
DarkSky International, formerly known as the International Dark Sky Association, is a global network of volunteers combating light pollution. The non-profit organisation established in 1988 is based in Tuscon, Arizona in the United States. But more than 193,000 people across more than 70 countries are involved, including astronomers, environmental scientists and the public.
The International Dark Sky Places Program was born in 2001 when Flagstaff, Arizona was named the first International Dark Sky City. Now the program certifies five types of Dark Sky Places: sanctuaries, reserves, parks, communities, and urban night sky.
DarkSky says the aim is to “preserve and protect the nighttime environment and our heritage of dark skies through environmentally responsible outdoor lighting”. It recognises places that demonstrate a commitment to reducing light pollution through public education, policy, and promoting responsible lighting practices.
There are now well over 200 Dark Sky Places across the globe. This covers more than 160,000 square kilometres in 22 countries on six continents.
Protecting the night with International Dark Sky Places since 2001.
Australia’s Dark Sky Places
Australia is home to several Dark Sky Places, each recognised for their exceptional night skies and dedication to reducing light pollution. These include:
Palm Beach earns global recognition for starry night skies | 9 News Australia.
Our journey in Carrickalinga
Since 2021, the Carrickalinga community has worked tirelessly towards achieving International Dark Sky Community certification. The journey involved several key initiatives:
Sky Quality Metering Program: regular measurements of sky brightness to monitor light pollution levels
Community engagement: presentations to community groups and the district council to raise awareness about light pollution, information stalls at local markets, community consultation process (led by the District Council of Yankalilla)
Educational materials: printed flyers, video, and a “Star Party” including a presentation on First Nations cosmology
Policy development: collaboration with the district council to create a lighting policy including public lighting design that complies with both Australian standards and DarkSky requirements.
Carrickalinga is currently upgrading existing public lighting to reduce light pollution. This will involve a new lighting design plan that reduces correlated colour temperature, ensuring shielded downward-facing lights minimise skyglow, glare and light trespass.
Reducing light pollution by upgrading lighting fixtures does not compromise safety. Dark sky does not mean dark ground.
Light pollution has become such a problem because our lights are unnecessarily bright and poorly designed. Fixing the problem simply involves changing the colour from white to amber, shielding and targeting lights so they do not shine upwards and outwards, and reducing wattage where it is surplus to requirements for people’s safety.
Carrickalinga became Australia’s first International Dark Sky Community in May, 2024. The Backyard Universe
How you can help
Achieving and maintaining dark sky status is not difficult but it does require ongoing community effort. Here are the five principles for responsible outdoor lighting, which apply equally to domestic as well as public lighting:
Useful – use light only if it is needed and has a clear purpose
Targeted – direct light so it falls only where it is needed
Low light levels – light should be no brighter than necessary
Controlled – use light only when it is needed
Warm colours – use warm coloured lights wherever possible and avoid short-wavelength (blue–violet) light.
An inspirational journey
Achieving International Dark Sky Community status was a significant achievement in preserving the natural night environment and educating the local community about light pollution. This accomplishment demonstrates the power of community action and serves as a model for others.
By protecting our night skies, we safeguard a vital part of our natural and cultural heritage and also promote healthier ecosystems and communities. Carrickalinga’s journey serves as an inspiring example of what can be achieved through collective effort and dedication to preserving our planet’s natural beauty.
I would like to acknowledge the enormous contribution of Carrickalinga Dark Sky Community volunteer Sheryn Pitman, who works for Green Adelaide in the South Australian Department for Environment and Water, and helped write this article.
Join seed saver extraordinaire Lloyd Sharp, from Mid Blue Mountains Seed Savers, as we launch the Upper Blue Mountains Seed Saving and Gardening group at the Food Security Fair on Sat 18 October. Lloyd will share some of his extensive seed saving experience, and there will be an opportunity to purchase and share local seeds and plants. Huge thanks to Happy Valley Seeds for donating heirloom seeds and discount cards, and to @thediggersclub for generously donating Vegetable and Flower Sowing Guides and their 2025/2026 Heirloom Seed Annual. There will be one for every attendee! The Food Security Fair is being held at the Blue Mountains Planetary Health Centre 33-39 Acacia St Katoomba and the Seed Saving presentation is at 10.20am. Bookings essential here (link in profile): https://events.humanitix.com/food-security-fair-or-planetary-health-initiative
Nev Sweeney, renowned permaculture teacher and practitioner, from Under the Choko Tree, will be leading a workshop on how to build and use a solar food dehydrator at the Blue Mountains Food Security Fair on Saturday 18 Oct. Nev will talk about why food dehydration is a good idea, some techniques that can be used to dry food, pretreat or not to pretreat, general tips and considerations about food drying, drying fruit and veg, testing for dryness and using dried produce. He will explain how he made a simple direct solar food dryer and a more complex indirect solar food dryer. Reserve your spot here (link in profile): https://events.humanitix.com/food-security-fair-or-planetary-health-initiative
Planetary Health volunteer, American permaculture teacher Susan Krings, has been helping to organise the inaugural Blue Mountains Food Security Fair. If you`d like to learn more about volunteering at the Centre email planetaryhealth@bmcc.nsw.gov.au or ring 0407 437 553
You can purchase tickets for the Food Security Fair in Katoomba on Saturday 18 October here (link in profile): https://events.humanitix.com/food-sec...
The day will include stalls, talks and demos about growing, sourcing, cooking, preserving and enjoying plant based food and protecting habitat for wildlife. The event is part of a series celebrating the centenary of World Animal Day.
The fabulous line up of speakers and workshop tutors includes Dr Milena Bojovic on the Future of Food; Holly Davis, co-founder of Iku and author of `Ferment`; Michael from Good Fat Pastry; Nev Sweeney from Under the Choko Tree on how to build a Solar Powered Food Dehydrator; Lloyd Sharp from Mid Blue Mountains Seed Savers; Marnee Fox from Forage to Feast; Teya Brooks Pribac from Plant Inspired; and Erin Hall on Weaving with Weeds and Manu Prigioni from Farm it Forward.
Stalls will include EarthRising Mushroom Farm, Bibi`s Kitchen, edible native plants, the Planetary Health Cafe and more.
Each session needs to be booked individually as numbers are strictly limited.
This event is being supported by a sEEd grant from the Australian Association for Environmental Education.
At the Food Security Fair on Sat 18th October the inspiring Teya Brooks Pribac, author of ‘Not Just Another Vegan Cookbook’ and founder of Plant Inspired, will be sharing innovative but very simple culinary techniques that can help you make delicious icecream, ‘egg` sandwiches and a wide range of cheeses without any eggs or dairy. Food that’s healthier for you and the planet. You no longer need to worry if the supermarket shelves suddenly don’t have eggs, or if you can’t afford them! There are so many cooking techniques that can help us create our favourite foods, without requiring animal products! The session will end with one of Teya’s fabulous cheese tastings. Bookings essential for this fascinating workshop here (link in profile): https://events.humanitix.com/food-security-fair-or-planetary-health-initiative
This event is one of a series celebrating the centenary of @worldanimalday @ph_alliance
In Marnee Fox’s session on Wild Edibles at the Blue Mountains Food Security Fair on Sat 18 October, she’ll share how to incorporate wild ingredients into your every day diet AND make it delicious. Marnee Fox is a sustainable interior decorator, stylist, foodie and weed convert. She`s also one half of Forage to Feast Australia with husband, renowned environmental educator Diego Bonetto. Building on Diego`s much-loved weed foraging workshops, Marnee takes the food found on the foraging tour to the table. Bookings essential (link in profile): https://events.humanitix.com/food-security-fair-or-planetary-health-initiative
If you haven`t yet tried the deliciousness of Good Fat Pastry you`ll be in for a treat at the Food Security Fair on Sat 18 October! Join Michael, the creative baker producing these mouthwatering plant based (and mostly gluten free) treats for breakfast, where he will inspire you to rethink everything you know about baking:
"Baking is both borne and constrained by convention—as are our expectations. Since Ancient Egypt and Rome, eggs, dairy, and cereals have been used in baked goods for flavour and functionality. The enormity of cakes, pastries, biscuits, and desserts we know and love—and the countless we have no awareness of—have been discovered and created through spontaneity and experimentation. Almost always resting on the magical transformations of these key ingredients under heat and energy.
Yet as the realm of food is one of creativity and sensory inquisitiveness there are inherent possibilities for alternatives—in replicating the familiar as well as creating novelty. This path can follow the complexities of molecular gastronomy or the simple pragmatism of substituting with what`s on hand. Find whatever works for you."
Spaces are limited so bookings essential here (link in profile): https://events.humanitix.com/food-security-fair-or-planetary-health-initiative
One of the highlights of our Food Security Fair on Sat 18th October is our Weaving with Weeds workshop at the Planetary Health Centre in Katoomba. In this relaxing and enjoyable workshop Erin Hall will help you identify common invasive weeds that are ideal for basket making, and teach you the basic skills to weave a range of different objects. At the same time you`ll be removing and repurposing weeds that are destroying habitat for our wildlife! Places are limited so bookings essential here (link in profile): https://events.humanitix.com/food-security-fair-or-planetary-health-initiative
We’re thrilled to announce that tickets are now available for Ferment the Season with Holly Davis at the Blue Mountains Food Security Fair on Saturday 18th October at the Planetary Health Centre in Katoomba. Holly will demonstrate how to ferment the season to create more nutrient rich and digestible food. She is the co-founder of Sydney’s Iku Wholefoods and author of ‘Ferment - A Guide to the Ancient Art of Culturing Food’ and ’Nourish: Sustenance for Body and Soul”. Learn the foundational principles and several techniques for fermenting seasonally abundant produce. Fermentation increases nutrition and eating a little ferment with every meal has unlimited benefits for our overall wellbeing and the planet! Places are limited so book early here (Food Security Fair link in profile for tickets): https://events.humanitix.com/food-security-fair-or-planetary-health-initiative
Thank you to everyone who so generously contributed to our celebration of the centenary of World Animal Day, and our tribute to the life of artist, poet, author, Animal Liberation founder, and animal rights activist, Christine Townend, at the Planetary Health Centre yesterday. At a packed event we feasted on delicious plant-based food, inspiring art and poetry, and memorable conversations, as we shared our love and respect for the extraordinary world of animals of which we are a part. Join us for further celebrations at our Food Security Fair on Saturday 18 October. Register here (link in profile): https://events.humanitix.com/food-security-fair-or-planetary-health-initiative
We`re thrilled to announce that tickets are now on sale for our inaugural Blue Mountains Food Security Fair at the Planetary Health Centre in Katoomba on Saturday 18 October! Register here (link in profile): https://events.humanitix.com/food-security-fair-or-planetary-health-initiative
The day will include stalls, talks and demos about growing, sourcing, cooking, preserving and enjoying plant based food and protecting habitat for wildlife.
Our fabulous line up of speakers and workshop tutors includes Dr Milena Bojovic on the Future of Food; Holly Davis, co-founder of Iku and author of `Ferment`; Michael from Good Fat Pastry; Nev Sweeney from Under the Choko Tree on how to build a Solar Powered Food Dehydrator; Lloyd Sharp from Mid Blue Mountains Seed Savers; Marnee Fox from Forage to Feast; Teya Brooks Pribac from Plant Inspired; and Erin Hall on Weaving with Weeds. Stalls will include EarthRising Mushroom Farm, edible native plants, the Planetary Health Cafe and more. Each session needs to be booked individually as numbers are strictly limited.
This event is being supported by a sEEd grant from the Australian Association for Environmental Education.
This Saturday 4 Oct, on the centenary of World Animal Day, you can meet other people passionate about protecting our wild neighbours, and contribute to restoring habitat for wildlife with them, by coming along and joining our dedicated team of Planetary Health Bushcarers as we regenerate the bushland at the Planetary Health Precinct. Learn more and register to attend (1.30pm) here: (link in profile): https://events.humanitix.com/planetary-health-bushcare-spring-summer-2025
Woohoo! We are so thrilled. Katoomba poet David Brooks has just won the Prime Minister`s Literary Award for Poetry with his book "The Other Side of Daylight: New and Selected Poems". Come and celebrate with us this coming Saturday night when he`ll read from his work for a World Animal Day celebration at the Planetary Health Centre. Bookings here (link in profile): https://events.humanitix.com/world-animal-day-raising-the-bar-for-nature
(apologies for dodgy screenshots ... we`ve been watching the awards streaming on YouTube tonight)
On the 80th anniversary of the bombing of Nagasaki and Hiroshima the Planetary Health Initiative and the Blue Mountains Peace Collective hosted a Peace Symposium and Community Picnic to provide pathways for everyone to take steps for a more peaceful future.
