Cities<\/h2>\n\n\n\n![\"Europe](\"https:\/\/darksky.org\/app\/uploads\/2023\/04\/Europe-at-night-topaz2-scaled.jpg\")
<\/a> Credit: NASA<\/span><\/figcaption><\/figure>\n\n\n![\"Ohio](\"https:\/\/darksky.org\/app\/uploads\/2023\/04\/Ohio-at-night-2012-topaz.jpeg\")
<\/a> Credit: NASA<\/span><\/figcaption><\/figure>\n<\/figure>\n\n\n\nWhen people first went to space, it became dramatically evident how much humans were altering the night sky: Cities are easily viewable from the International Space Station (ISS) at night. Decades on, astronauts on the ISS have observed the light pollution growing as cities sprawl ever larger<\/a>. <\/p>\n\n\n\nCities account for most light pollution since they have the most unshielded, improperly colored lights, sending light upward into the sky rather than downward for human safety.<\/p>\n\n\n\n
Learn more: City lights from space<\/a>
Learn more: NPS Night Sky Initiative part of emotional video by Astronaut Jeff Williams<\/a> <\/p>\n<\/div>\n\n\n\n
\n\n\n\n\nOutdoor lights<\/h2>\n\n\n\n![\"Glare](\"https:\/\/darksky.org\/app\/uploads\/2023\/04\/Milky-Way-and-infinite-galaxy-credit-uniments1-shutterstock_1185796735-scaled-1440x1040.jpg\")
<\/a> Credit: uniments1 \/ Shutterstock<\/span><\/figcaption><\/figure>\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2023\/04\/Acorn_light_bad_glare-topaz-scaled-1440x756.jpeg\")
<\/a><\/figure>\n<\/figure>\n\n\n\nFrom unshielded pathway lights and streetlights to illuminated signs, most light at night is wasted, spilling up into the air instead of down at the ground where it\u2019s needed for safety and wayfinding.<\/p>\n\n\n\n
Learn more: The Five Principles for Responsible Outdoor Lighting<\/a>
Learn more: City\u2019s LED retrofit shows need for careful lighting choices<\/a><\/p>\n<\/div>\n\n\n\n
\n\n\n\n\nStreetlights<\/h2>\n\n\n\n![\"Misty](\"https:\/\/darksky.org\/app\/uploads\/2023\/04\/light-pollution-streetlights-glare-credit-Gorloff-KV-shutterstock_2192788945-scaled-1440x960.jpg\")
<\/a> Credit: Gorloff-KV \/ Shutterstock<\/span><\/figcaption><\/figure>\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2020\/11\/Kozushima_1_before-1440x960.jpg\")
<\/a><\/figure>\n<\/figure>\n\n\n\nWhile streetlights can be retrofitted to be dark sky friendly, most cities and towns haven\u2019t accomplished this yet.<\/p>\n\n\n\n
Learn more: 5 popular myths about LED streetlights<\/a>
Learn more: Experiment uses smart city lighting to measure streetlight emissions<\/a>
<\/p>\n<\/div>\n\n\n\n
\n\n\n\n\nElectronic advertising<\/h2>\n\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2023\/04\/Light-pollution-from-electronic-signs-in-Osaka-Japan-credit-MosayMay-shutterstock_767814838-scaled-1440x961.jpg\")
<\/a> Credit: MosayMay \/ shutterstock<\/span><\/figcaption><\/figure>\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2019\/05\/iStock-156691504-scaled.jpg\")
<\/a><\/figure>\n<\/figure>\n\n\n\nElectronic billboards, also known as electronic messaging centers (EMCs) can be up to ten times brighter at night than traditionally lit billboards. LEDs from EMCs cannot be shielded, so light is flooded into the night sky.<\/p>\n\n\n\n
Light from EMCs can cause glare and be a dangerous distraction to drivers. In some cases, EMC light can be visible from long distances and may affect the breeding, foraging, and orientation behaviors of nocturnal wildlife.<\/p>\n\n\n\n
Position statement: Our position on electronic billboards<\/a>
Learn more: Guidance on how to properly implement an EMC<\/a><\/p>\n<\/div>\n\n\n\n
\n\n\n\n\nParking lots<\/h2>\n\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2023\/04\/Yellow-glare-of-streetlights-in-an-empty-parking-lot-at-night-from-above.-Credit-Sotnikov-Ivan-shutterstock_478025008-5-1440x1079.jpg\")
<\/a> Credit: Sotnikov Ivan \/ Shutterstock<\/span><\/figcaption><\/figure>\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2023\/04\/Volkswagen-Russia-Kaluga-JULY-9-2019-New-cars-parked-at-distribution-center-automobile-factory-at-night-with-lights.-Credit-Eugene_Photo-shutterstock_1464748169-scaled-1440x960.jpg\")
<\/a> Credit: Eugene_Photo \/ Shutterstock<\/span><\/figcaption><\/figure>\n<\/figure>\n\n\n\nKeeping empty parking lots lit all night without timers causes light to be reflected upward into the sky, not to mention wasting energy. Car dealerships, shopping malls, and industrial lots are too often overlit and wasteful.<\/p>\n\n\n\n
Learn more: Dark sky friendly outdoor lighting for policy makers<\/a><\/p>\n<\/div>\n\n\n\n
\n\n\n\n\nSports lighting<\/h2>\n\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2023\/04\/Brightly-lit-sports-complex-illuminating-more-than-the-sports-field.-Credit-Iscotlanda-Photography-shutterstock_1191412615-scaled-1440x961.jpg\")
<\/a> Credit: Iscotlanda Photography \/ Shutterstock<\/span><\/figcaption><\/figure>\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2023\/04\/Sports-lights-on-a-high-tower-horz-Credit-Stefan-Holm-shutterstock_443524102-scaled-1440x1130.jpg\")
<\/a> Credit: Credit Stefan Holm \/ Shutterstock<\/span><\/figcaption><\/figure>\n<\/figure>\n\n\n\nWhile nighttime sports offer plenty of valuable benefits to humans, poorly designed lighting at outdoor sports centers, fields, and stadiums causes increased light pollution in parts of town that are often adjacent to open space and parks \u2014 habitat for our non-human neighbors.<\/p>\n\n\n\n
However, recreational sports lighting can be configured and designed to be effectively shielded to illuminate the field of play and<\/em> minimize or eliminate glare and light trespass.<\/p>\n\n\n\nPosition statement: Our position on sports lighting
Learn more: DarkSky\u2018s Outdoor Sports Lighting program<\/a><\/p>\n<\/div>\n\n\n\n
\n\n\n\n\nGreenhouses<\/h2>\n\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2023\/04\/greenhouses-Industrial-size-greenhouse-operations-can-emit-enormous-amounts-of-light-pollution.-Credit-Alexandr-Bochkarev-shutterstock_1723240186-scaled-1440x960.jpg\")
<\/a> Credit: Alexandr Bochkarev \/ Shutterstock<\/span><\/figcaption><\/figure>\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2023\/04\/Biggest-greenhouse-complex-in-the-Baltic-States.-Kietaviskes-Lithuania.-Credit-medijucentras-shutterstock_1287274333-scaled-1440x809.jpg\")
<\/a> Credit: medijucentras \/ Shutterstock<\/span><\/figcaption><\/figure>\n<\/figure>\n\n\n\nResidents in North America and Europe increasingly report strange glows in the night sky. Lighted greenhouses in densely populated areas are creating conditions of light trespass. Bright glows in unusual colors over greenhouses are sometimes considered a nuisance by neighbors.<\/p>\n\n\n\n
Governments largely have yet to confront the situation, in part because it\u2019s not clear how to regulate the light that greenhouses produce. With few regulations in place and a friendly business climate in many areas, operators are choosing increasingly to light all or most of the night with few, if any, legal consequences.<\/p>\n\n\n\n
Learn more: What does lettuce have to do with my night sky?<\/a>
Learn more: A land of perpetual false dawn<\/a><\/p>\n<\/div>\n\n\n\n
\n\n\n\n\nFactories and industrial<\/h2>\n\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2023\/06\/Map-Ta-Phut-ports-and-petrochemical-plants-Rayong-Thailand-credit-Ben-Petcharapiracht-Shutterstock-1018876639-sm-scaled-1440x1079.jpg\")
<\/a><\/figure>\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2023\/06\/overlit-petrochemical-plant-at-night-credit-tungtopgun-shutterstock_64562869-scaled-1440x960.jpg\")
<\/a><\/figure>\n<\/figure>\n\n\n\nWarehouse distribution hubs, gas and oil production, and more.<\/p>\n\n\n\n
Learn more: Good and bad outdoor lighting<\/p>\n<\/div>\n\n\n\n
\n\n\n\n\nHouses and apartments<\/h2>\n\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2023\/06\/homeowner-overlighting-credit-Petinov-Sergey-Mihilovich-shutterstock_27916120-scaled-1440x960.jpg\")
<\/a><\/figure>\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2023\/06\/unshielded-outdoor-wall-lamp-credit-Yuliya-Yesina-Shutterstock-354284375-scaled-1440x885.jpg\")
<\/a><\/figure>\n<\/figure>\n\n\n\nLearn more: 15 million tons of carbon dioxide emitted each year on residential outdoor lighting<\/a><\/p>\n<\/div>\n\n\n\n
\n\n\n\n\nLandscaping and mood lighting<\/h2>\n\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2023\/06\/poor-landscape-lighting-yard-unshielded-walkway-bollards-credit-Oleg-Mikhaylov-shutterstock_289253741-scaled-1440x857.jpg\")
<\/a><\/figure>\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2023\/06\/poor-landscape-lighting-pool-yard-unshielded-credit-Tomasz-Markowski-shutterstock_4063666-scaled-1440x960.jpg\")
<\/a><\/figure>\n<\/figure>\n\n\n\nWe love our Instagram-worthy backyards lit with party lights, landscape lights, and such, but when no one\u2019s there to use it, the energy is wasted and it contributes to light pollution in our neighborhoods. Outdoor lights should always be on a timer, sensor, or just plain shut off when not in use.<\/p>\n\n\n\n
Learn more: The Five Principles of Responsible Outdoor Lighting<\/a><\/p>\n<\/div>\n\n\n\n
\n\n\n\n\nRural places<\/h2>\n\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2021\/08\/darksky_96063438_Full-1.jpg\")
<\/a><\/figure>\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2020\/02\/atitlan-fisheye-00001-1440x960.jpg\")
<\/a><\/figure>\n<\/figure>\n\n\n\nCities and suburbs may be the biggest contributors to light pollution, but rural places aren\u2019t off the hook. Overlighting can happen anywhere that unshielded light fixtures cause glare, light trespass, and upward scattered light.<\/p>\n<\/div>\n\n\n\n
\n\n\n\n\nOil and gas production<\/h2>\n\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2023\/06\/Oil-Gas-flare-stacks-oil-and-gas-burning-out-into-the-air-at-night.-shutterstock_1325411201-scaled-1440x810.jpg\")
<\/a><\/figure>\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2023\/06\/light-from-oil-gas-flares-western-united-states-2015-composite-data-scaled-1440x993.jpg\")
<\/a><\/figure>\n<\/figure>\n\n\n\nPhoto credit: NOAA, Tim Wallace.<\/p>\n\n\n\n
Massive oil and gas development projects are often located far from populated areas, but that doesn’t reduce their negative effects on wildlife.
Artificial light at night throws birds off<\/a> their migration paths. Some have been known to fruitlessly circle bright natural-gas flares, unable to navigate away<\/a> from the light and as a result lose close to half of their body weight in one night.<\/p>\n\n\n\nThe satellite composite image above shows light pollution from oil and gas flares in the western United States (2015 composite data). <\/p>\n\n\n\n
Learn more: Blinded by the light pollution \u00b7 The Revelator<\/em><\/a><\/p>\n<\/div>\n\n\n\n
\n\n\n\n\nSatellites<\/h2>\n\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2022\/03\/ann21021c-Albireo-in-Cygnus-with-Starlink-Satellites-Rafael-Schmall-medium.jpg\")
<\/a><\/figure>\n\n\n![\"\"](\"https:\/\/darksky.org\/app\/uploads\/2022\/03\/ann21047i-Satellite-Light-Pollution-Torsten-Hansen_IAU-OAE-medium.jpg\")
<\/a><\/figure>\n<\/figure>\n\n\n\nAstronomers have expressed unease in recent years about the growing number of objects orbiting the planet, particularly large fleets of communications satellites known informally as \u201cmega-constellations.\u201d<\/p>\n\n\n\n
Research published in the Monthly Notices of the Royal Astronomical Society Letters<\/em>, finds that objects orbiting Earth elevate the brightness of the night sky by at least 10 percent over natural light levels, exceeding a threshold that astronomers set over 40 years ago for considering a location \u201clight polluted.\u201d<\/p>\n\n\n\nPosition statement: Our position on satellite megaconstellations<\/a>
Learn more: Satellite megaconstellations<\/a><\/p>\n<\/div>\n\n\n\n
\n","protected":false},"excerpt":{"rendered":"Light pollution is a problem, but there\u2019s no single country, group, or industry to blame. Instead, it\u2019s a result of the whole world\u2019s ever-expanding reliance on outdoor electrical lights for over 200 years. Fortunately, there\u2019s a growing awareness that the ways we stave off the dark can actually have detrimental effects too. Let\u2019s look at …<\/p>\n","protected":false},"author":41,"featured_media":23306,"parent":22030,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[619,602,618],"tags":[],"advocacy_type":[],"events_terms":[],"locations_terms":[],"admin_issue":[],"class_list":["post-23279","page","type-page","status-publish","has-post-thumbnail","hentry","category-causes-of-light-pollution","category-resources","category-what-is-light-pollution"],"acf":[],"_links":{"self":[{"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/pages\/23279","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/users\/41"}],"replies":[{"embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/comments?post=23279"}],"version-history":[{"count":47,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/pages\/23279\/revisions"}],"predecessor-version":[{"id":28004,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/pages\/23279\/revisions\/28004"}],"up":[{"embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/pages\/22030"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/media\/23306"}],"wp:attachment":[{"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/media?parent=23279"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/categories?post=23279"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/tags?post=23279"},{"taxonomy":"advocacy_type","embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/advocacy_type?post=23279"},{"taxonomy":"events_terms","embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/events_terms?post=23279"},{"taxonomy":"locations_terms","embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/locations_terms?post=23279"},{"taxonomy":"admin_issue","embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/admin_issue?post=23279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
<\/a><\/a>When people first went to space, it became dramatically evident how much humans were altering the night sky: Cities are easily viewable from the International Space Station (ISS) at night. Decades on, astronauts on the ISS have observed the light pollution growing as cities sprawl ever larger<\/a>. <\/p>\n\n\n\n Cities account for most light pollution since they have the most unshielded, improperly colored lights, sending light upward into the sky rather than downward for human safety.<\/p>\n\n\n\n Learn more: City lights from space<\/a> From unshielded pathway lights and streetlights to illuminated signs, most light at night is wasted, spilling up into the air instead of down at the ground where it\u2019s needed for safety and wayfinding.<\/p>\n\n\n\n Learn more: The Five Principles for Responsible Outdoor Lighting<\/a> While streetlights can be retrofitted to be dark sky friendly, most cities and towns haven\u2019t accomplished this yet.<\/p>\n\n\n\n Learn more: 5 popular myths about LED streetlights<\/a> Electronic billboards, also known as electronic messaging centers (EMCs) can be up to ten times brighter at night than traditionally lit billboards. LEDs from EMCs cannot be shielded, so light is flooded into the night sky.<\/p>\n\n\n\n Light from EMCs can cause glare and be a dangerous distraction to drivers. In some cases, EMC light can be visible from long distances and may affect the breeding, foraging, and orientation behaviors of nocturnal wildlife.<\/p>\n\n\n\n Position statement: Our position on electronic billboards<\/a> Keeping empty parking lots lit all night without timers causes light to be reflected upward into the sky, not to mention wasting energy. Car dealerships, shopping malls, and industrial lots are too often overlit and wasteful.<\/p>\n\n\n\n Learn more: Dark sky friendly outdoor lighting for policy makers<\/a><\/p>\n<\/div>\n\n\n\n While nighttime sports offer plenty of valuable benefits to humans, poorly designed lighting at outdoor sports centers, fields, and stadiums causes increased light pollution in parts of town that are often adjacent to open space and parks \u2014 habitat for our non-human neighbors.<\/p>\n\n\n\n However, recreational sports lighting can be configured and designed to be effectively shielded to illuminate the field of play and<\/em> minimize or eliminate glare and light trespass.<\/p>\n\n\n\n Position statement: Our position on sports lighting Residents in North America and Europe increasingly report strange glows in the night sky. Lighted greenhouses in densely populated areas are creating conditions of light trespass. Bright glows in unusual colors over greenhouses are sometimes considered a nuisance by neighbors.<\/p>\n\n\n\n Governments largely have yet to confront the situation, in part because it\u2019s not clear how to regulate the light that greenhouses produce. With few regulations in place and a friendly business climate in many areas, operators are choosing increasingly to light all or most of the night with few, if any, legal consequences.<\/p>\n\n\n\n Learn more: What does lettuce have to do with my night sky?<\/a> Warehouse distribution hubs, gas and oil production, and more.<\/p>\n\n\n\n Learn more: Good and bad outdoor lighting<\/p>\n<\/div>\n\n\n\n Learn more: 15 million tons of carbon dioxide emitted each year on residential outdoor lighting<\/a><\/p>\n<\/div>\n\n\n\n We love our Instagram-worthy backyards lit with party lights, landscape lights, and such, but when no one\u2019s there to use it, the energy is wasted and it contributes to light pollution in our neighborhoods. Outdoor lights should always be on a timer, sensor, or just plain shut off when not in use.<\/p>\n\n\n\n Learn more: The Five Principles of Responsible Outdoor Lighting<\/a><\/p>\n<\/div>\n\n\n\n Cities and suburbs may be the biggest contributors to light pollution, but rural places aren\u2019t off the hook. Overlighting can happen anywhere that unshielded light fixtures cause glare, light trespass, and upward scattered light.<\/p>\n<\/div>\n\n\n\n Photo credit: NOAA, Tim Wallace.<\/p>\n\n\n\n Massive oil and gas development projects are often located far from populated areas, but that doesn’t reduce their negative effects on wildlife. The satellite composite image above shows light pollution from oil and gas flares in the western United States (2015 composite data). <\/p>\n\n\n\n Learn more: Blinded by the light pollution \u00b7 The Revelator<\/em><\/a><\/p>\n<\/div>\n\n\n\n Astronomers have expressed unease in recent years about the growing number of objects orbiting the planet, particularly large fleets of communications satellites known informally as \u201cmega-constellations.\u201d<\/p>\n\n\n\n Research published in the Monthly Notices of the Royal Astronomical Society Letters<\/em>, finds that objects orbiting Earth elevate the brightness of the night sky by at least 10 percent over natural light levels, exceeding a threshold that astronomers set over 40 years ago for considering a location \u201clight polluted.\u201d<\/p>\n\n\n\n Position statement: Our position on satellite megaconstellations<\/a> Light pollution is a problem, but there\u2019s no single country, group, or industry to blame. Instead, it\u2019s a result of the whole world\u2019s ever-expanding reliance on outdoor electrical lights for over 200 years. Fortunately, there\u2019s a growing awareness that the ways we stave off the dark can actually have detrimental effects too. Let\u2019s look at …<\/p>\n","protected":false},"author":41,"featured_media":23306,"parent":22030,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[619,602,618],"tags":[],"advocacy_type":[],"events_terms":[],"locations_terms":[],"admin_issue":[],"class_list":["post-23279","page","type-page","status-publish","has-post-thumbnail","hentry","category-causes-of-light-pollution","category-resources","category-what-is-light-pollution"],"acf":[],"_links":{"self":[{"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/pages\/23279","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/users\/41"}],"replies":[{"embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/comments?post=23279"}],"version-history":[{"count":47,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/pages\/23279\/revisions"}],"predecessor-version":[{"id":28004,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/pages\/23279\/revisions\/28004"}],"up":[{"embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/pages\/22030"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/media\/23306"}],"wp:attachment":[{"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/media?parent=23279"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/categories?post=23279"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/tags?post=23279"},{"taxonomy":"advocacy_type","embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/advocacy_type?post=23279"},{"taxonomy":"events_terms","embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/events_terms?post=23279"},{"taxonomy":"locations_terms","embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/locations_terms?post=23279"},{"taxonomy":"admin_issue","embeddable":true,"href":"https:\/\/darksky.org\/wp-json\/wp\/v2\/admin_issue?post=23279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Learn more: NPS Night Sky Initiative part of emotional video by Astronaut Jeff Williams<\/a> <\/p>\n<\/div>\n\n\n\n
\n\n\n\nOutdoor lights<\/h2>\n\n\n\n
<\/a><\/a><\/figure>\n<\/figure>\n\n\n\n
Learn more: City\u2019s LED retrofit shows need for careful lighting choices<\/a><\/p>\n<\/div>\n\n\n\n
\n\n\n\nStreetlights<\/h2>\n\n\n\n
<\/a><\/a><\/figure>\n<\/figure>\n\n\n\n
Learn more: Experiment uses smart city lighting to measure streetlight emissions<\/a>
<\/p>\n<\/div>\n\n\n\n
\n\n\n\nElectronic advertising<\/h2>\n\n\n\n
<\/a><\/a><\/figure>\n<\/figure>\n\n\n\n
Learn more: Guidance on how to properly implement an EMC<\/a><\/p>\n<\/div>\n\n\n\n
\n\n\n\nParking lots<\/h2>\n\n\n\n
<\/a><\/a>
\n\n\n\nSports lighting<\/h2>\n\n\n\n
<\/a><\/a>
Learn more: DarkSky\u2018s Outdoor Sports Lighting program<\/a><\/p>\n<\/div>\n\n\n\n
\n\n\n\nGreenhouses<\/h2>\n\n\n\n
<\/a><\/a>
Learn more: A land of perpetual false dawn<\/a><\/p>\n<\/div>\n\n\n\n
\n\n\n\nFactories and industrial<\/h2>\n\n\n\n
<\/a><\/figure>\n\n\n<\/a><\/figure>\n<\/figure>\n\n\n\n
\n\n\n\nHouses and apartments<\/h2>\n\n\n\n
<\/a><\/figure>\n\n\n<\/a><\/figure>\n<\/figure>\n\n\n\n
\n\n\n\nLandscaping and mood lighting<\/h2>\n\n\n\n
<\/a><\/figure>\n\n\n<\/a><\/figure>\n<\/figure>\n\n\n\n
\n\n\n\nRural places<\/h2>\n\n\n\n
<\/a><\/figure>\n\n\n<\/a><\/figure>\n<\/figure>\n\n\n\n
\n\n\n\nOil and gas production<\/h2>\n\n\n\n
<\/a><\/figure>\n\n\n<\/a><\/figure>\n<\/figure>\n\n\n\n
Artificial light at night throws birds off<\/a> their migration paths. Some have been known to fruitlessly circle bright natural-gas flares, unable to navigate away<\/a> from the light and as a result lose close to half of their body weight in one night.<\/p>\n\n\n\n
\n\n\n\nSatellites<\/h2>\n\n\n\n
<\/a><\/figure>\n\n\n<\/a><\/figure>\n<\/figure>\n\n\n\n
Learn more: Satellite megaconstellations<\/a><\/p>\n<\/div>\n\n\n\n
\n","protected":false},"excerpt":{"rendered":"