Big Picture One – Directory Of Multimedia eLearning Posts

Multimedia essays & eLearning programs by: David Anthony Johanson  © All Rights 

To quickly view sites of interest, just click on the white text to the right of the feature photo & above the program’s description. You also have the option to navigate to each essay by simply scrolling down past the end of this directory.

Essays are listed in chronological order from when they were first published.

You’ll find in each program essay, a spectrum of resources to help better understand & appreciate the subject matter. To enhance your experience, a variety of carefully considered dynamic content is used, including: photographs, videos, graphics, text & hyperlinks to other sites. Every effort is made to assure the information presented is factually correct by cross referencing content & giving proper credit for creative work used in the stories & essays.

You’re invited & encouraged to comment on the programs presented here, by doing so, you enrich the site by making it a more interactive experience. All constructive comments are welcome, even if you’re not in total agreement with the article’s point of view.

The author of these sites is a multimedia photographer, CTE instructor and a former Boeing scientific photographer.

For an alternative graphic format of these programs, please visit — www.ScienceTechTablet.wordpress.com 

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https://bigpictureone.wordpress.com/2014/12/31/new-brain-based-learning-strategies-explored-using-neuroimaging/  New Brain-Based Learning Strategies Explored To Help Achieve Your Full Potential. Finding and sharing new learning strategies, that are inspired from evidence based, neuroimaging and brain-mapping studies, is a dynamic process to help assist individuals in reaching their full learning potential. Brain-based learning is a spectrum of teaching strategies, which uses neuroscience research on how the brain functions in achieving ideal development and potential. Learning concepts used: Applied Learning, Adult Learning, Competency-based Learning, Critical Thinking, Integrative Learning. Key: Words or phrases italicized are used to focus on essential concepts or terms for enhanced learning and retention.

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https://bigpictureone.wordpress.com/tag/gone-in-30-seconds-elearning-program-on-rocket-launch-disaster/  Gone In 30 seconds… It’s estimated that an average of 8 percent of all commercial rocket launches end in failure. This eLearning program includes a compendium of 20th & 21st century rocket launches, including dramatic failures. A succinct introduction to space law is included for greater appreciation of the consequences and liabilities related to the growing number of commercial rocket launches. A detailed world map illustrates the major spaceports & launch centers using GPS coordinates and web address. 

An eLearning program for secondary/post secondary education and community learning content covered: — aerospace/astronautic engineering, avionics, economics & business, environmental footprint, financing, manufacturing, marketing, obsolescence management, technology& Space Law. Learning concepts used: Applied Learning, Adult Learning, Competency-based Learning, Critical Thinking, Integrative Learning. Key: Words or phrases italicized are used to focus on essential concepts or terms for enhanced learning and retention.

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https://bigpictureone.wordpress.com/tag/david-a-johanson-historian/  Will The Next Jet Airliner You Fly Be Obsolete, And Ready for Early Retirement?  This multimedia essay examines the evolving financing strategies and technological developments affecting older generation commercial aircraft. An eLearning program for secondary/post secondary education and community learning. Assessment tool: A quiz and answer key is located at the end of the program. Learning content covered: aerospace/airliner— aerospace engineering, avionics, economics & business, environmental footprint, financing, manufacturing, marketing, obsolescence management, technology. Learning concepts used: Applied Learning, Adult Learning, Competency-based Learning, Critical Thinking, Integrative Learning. Key: Words or phrases italicized are used to focus on essential concepts or terms for enhanced learning and retention.

[ Disclaimer: David Johanson is a former Boeing scientific photographer and currently has no stock holdings or a financial interest in: Boeing, Airbus or any other companies referenced in this program. Research in this article has been cross referenced using at least three sources, however, all perspectives and opinions represent only the viewpoints of the author.]

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https://bigpictureone.wordpress.com/2014/04/22/the-environment-our-earths-lost-frontier/ The Environment, Our Earth’s Lost Frontier. A photo essay dedicated to the environment using photos from editorial and industrial photo assignments. From Alaska’s oil rich Arctic region to the tropical rain forest of Hawaii, environmental encounters and stories are visually shared. eLearning – suitable for secondary/postsecondary education, community & extended learning. Photo-illustration, graphics, text and links on Earthday and the environment included within this program. 

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https://bigpictureone.wordpress.com/2014/03/04/the-martian-prophecies-earths-conquest-of-the-red-planet/  The Martian Prophecies. In this futurist multimedia photo essay, a correspondent from 2054 presents a series of Astronautical engineering and Astrobiology developments enabling the remarkable colonization of Mars. ELearning – suitable for secondary/postsecondary education, community & extended learning. Extensive photo-illustration, graphics, text and links on Mars colonization included within this program.

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https://bigpictureone.wordpress.com/2013/09/11/an-introductionary-guide-to-steampunk/ — A Beginners Guide to Steampunk. — Photo essay introduction to Steampunk subculture. As a sub-genre of science fiction its practitioners feature Victorian era clothing along with accessories such as goggles, intricate antique jewelry & a wide spectrum of retro-futuristic attachments. Subjects include critical thinking, alternative lifestyle, 19TH Century Industrial History & Steampunk Etymology.

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https://bigpictureone.wordpress.com/2013/07/31/how-did-romes-vitruvius-become-the-worlds-first-impact-player-in-architecture/  Multimedia photo essay introduction to Roman architect & engineer Vitruvius, who writes the first book on architecture. Vitruvius’ influence is relevant for modern architecture, STEM, Pre-Engineer & CTE related content. For Secondary & post secondary learning. ELearning, Links relating subject matter, quizzes for learning. Extensive photography of Roman architecture featured from: Rome, Ostia Antica & Herculaneum.

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bigpictureone.wordpress.com/tag/photos-of-pearl-harbor-visitor-center/  Low light architectural photography of the new Pearl Harbor Visitor Center on Oahu, Hawaii. Multicultural essay of modern Hawaiian & Pan Pacific Cultures. — multimedia photo essay, eLearning, photo tutorial on marketing & night photography, reference links

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Is Space Law Really That Far Over Your Head? | bigpictureone   Space Law introduction, case studies, space port launch sites, space debris, asteroid mining includes history of the modern rocket program. — Multimedia essay, eLearning, STEM & CTE content, quizzes, interactive map, video links, reference links

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Reflecting on the 33rd Anniversary of Mount Saint Helens Eruption | bigpictureone    Reflections on a close encounter with one of the worlds most active stravovolcanos.  Mt. Saint Helens eruption – photo essay, eLearning, reference links

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What Chance Will America’s Youth Have In A Changing   Global Economy? | bigpictureone STEM Education & Magnet Schools – Origins of the program & its success in public education. STEM expo at Mountlake Terrace HS -Edmonds School District.–  Multimedia essay, eLearning, STEM & CTE content, reference links

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Reflections From A Future Hawaii. Can A Tropical Paradise Become A Portal To Deep Space? | bigpictureone   Futuristic Hawaii in the year 2054 as it’s transformed into a space port & gateway to space. — Multimedia essay, eLearning, links

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An unusual encounter with a Waikiki Santa Clause | bigpictureone      Photo essay of a Waikiki Santa Clause using an adaptation of Clement Clare Moore’s (1799 -1863) classic poem — Twas the night before Christmas. Multimedia photo essay.  Mele Kalikimaka! — multimedia, poetry, eLearning

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https://bigpictureone.wordpress.com/2012/12/20/will-the-last-people-remaining-in-america-turn-the-lights-back-on/  Multimedia essay on solar flares, solar/geomagnetic storms & solar maximum of 2013-2014. Potential solar storm scenarios, which government scientist & federal agencies are warning about, including loss of world power grids. Resources & links to various publications & sites  included. — multimedia, eLearning on solar storm history & threats to current infrastructure, STEM related content, quizzes, reference links

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A Glimpse Into Havana’s Legendary Watering Hole | bigpictureone Family photo taken in 1941 at Havana’s Sloppy Joe’s, inspired this photo essay of events shortly before & after the start of WWII. Family chronicled as they arrive in Panama for reunion with my grandfather, evacuated & survive being stalked by German wolf-pack U-boat submarine. — multimedia essay – eLearning

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The Latest Full Throttle Multimedia Video of Seattle From the R22 Beta Helicopter – Part 2 of 2 | bigpictureone  Helicopter safety & repair video, aerial photography of Seattle & Boeing field, using an R22. — STEM & CTE learning, multimeida, eLearning, quizzes video essay.

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A Full Throttle Multimedia Video of Seattle      From the R22 Beta II Helicopter – Part 1 of 2. | bigpictureone  Helicopter safety & repair video, aerial photography for Port of Seattle, from Boeing Field, using an R22, eLearning video essay. STEM & CTE learning, aerospace engineering. — mutlimedia, eLearning, quizzes, resource links

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https://bigpictureone.wordpress.com/2012/08/31/who-were-the-titans-of-telecommunication-and-information-technology/ Introduction to R&D research labs through a multimedia history of Bell Laboratory, its developments inventions. Second chapter explores Xerox PARC founding in Silicon Valley &  contributions it made to personal computing & telecommunications. — eLearning, quizzes, reference links

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https://bigpictureone.wordpress.com/2012/08/16/blinded-by-the-light-in-the-middle-of-night/  Photo essay on light pollution’s effects on night photography, astronomy, animal migrations & quality of life. Mount Rainier National Park & long exposure photographs of landscape & star constellations are featured in this essay. — multimedia, eLearning, STEM related content,  quizzes, resource links

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https://bigpictureone.wordpress.com/2012/07/20/theres-nothing-new-under-the-sun-or-is-there/  Multimedia essay introduction to solar storms (including historical perspective), CME’s, effects of geomagnetic disturbances & potential threats to global electrical power grids. The connection between solar storm activity & aurora Borealis — eLearning, STEM related content, quizzes, resource links

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https://bigpictureone.wordpress.com/2012/02/21/exploring-etruscan-ruins-beneath-the-cliffs-of-medieval-orvieto-italy/ Multimedia essay on one of Europe’s best kept secrets — the medieval fortress citadel, Orvieto. Explores Etruscan ruins, grottos, medieval architecture, massive cathedrals & nearby Umbria countryside. Examines Etruscan art & its misunderstood cultural traditions under the shadow of the Roman Empire. — Critical thinking, World history & culture, travel, e-Learning, extensive photo gallery, quizzes, resource links

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https://bigpictureone.wordpress.com/2012/04/07/1382/ Multimedia essay includes video interview with a National Park Service’s ranger on the unique geology & wildlife qualities of John Day National Monument’s Painted Hills. Video features exclusive walking tour, which occurs only once per year. — night photography, resource links

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Boeing’s 787 Dreamliner Historic First Flight From Paine Field, Everett, WA. | bigpictureone Historic first flight video of Boeing 787 Dreamliner at Everett facilities by BigPictureOne. Multimedia of Boeing Scientific photography experience related to aircraft structures & test engineering. — ELearning, STEM & CTE Ed, large photo gallery, quizzes, resource links

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https://bigpictureone.wordpress.com/2012/04/22/the-world-event-which-launched-seattle-into-a-post-modern-orbit-50-years-ago-today/  Multimedia essay explores an early postmodern World’s fair — known as Seattle’s Century 21 Worlds Fair, opened in 1962, during the Cuban Missile Crisis.  e-Learning, STEM related content, quizzes, extensive photos

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https://bigpictureone.wordpress.com/2011/09/12/the-day-after-911-ten-years-after/ Multimedia narrative of a 1998 visit to the NYC World Trade Center Towers & the aftermath of the 9/11 terrorist attacks. Seattle architect Minoru Yamasaki’s designs of the NYC Trade Centers are compared with his Seattle Science Center design for the Century 21 Worlds Fair —eLearning, critical thinking, extensive photo gallery, quizzes, resource links

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Luminous Beauty of Low-light Photography | bigpictureone Photo essay tutorial on low-light photography. Strategies & techniques of using low noise sensors in digital cameras. Terms such as magic hour & HDR photography are explained. — eLearning, CTE related content, photo gallery

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KIngdome demolition March 26 2000 | bigpictureone Video multimedia essay of one of the World’s largest demolitions of Seattle Kingdome. E-learning, video tutorial (featured slow-motion & high-speed video effects), essay of event & aftermath from dust storm. Reference links included.

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Will The Current Solar Storms Hitting Earth, Lead To Lights-out for us by 2013-2014? | bigpictureone A multimedia essay introduction to solar storms, history of geomagnetic effects on industrial & postmodern societies. Civil preparedness, Photos & videos of Aurora Borealis. STEM & solar physics undergraduate content, extensive photos, resource links

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Reflecting on the 36th Anniversary of Mount Saint Helens Eruption

Observing the 33rd anniversary of the Mount Saint Helens eruption, which had occurred on Sunday 18th of May 1980 at 8:32 a.m. on a clear sunny morning.

 

Photo essay by: David A Johanson © All Rights

Flying off from Seattle to see family in San Francisco, I peered out my window to catch a sunrise falling on the north face of Mt. Saint Helens. In the photograph, a fresh plume of ash is seen spewing near the center of the crater after some renewed volcanic activity. Spirit Lake, partially frozen in the foreground sits at the base of an active volcano. I’m humbled every time I see this famous stratovolcano, because of a close encounter I nearly had with it on the weekend it violently erupted.

After graduating from college, I received a job offer from KING Broadcasting’s KREM TV, in Spokane. While working at the station, Mount Saint Helens dramatically awoke, focusing the world’s media attention on her mysterious activity. The volcano’s rumblings increased sharply over a few weeks and was building momentum, just before I was planning a weekend visit to Seattle to stay with friends. Having access to the station’s motion picture cameras, I made preparations to use part of the weekend for filming Spirit Lake, which sat under the shadow of the volcano. A feisty character, named Harry R. Truman, operated a lodge on the lake and I imagined it would be a great human-interest story to interview him in regards to all the Mountain’s activity.

The art director at the TV station, Bob Takeshita, was a good friend, so we made plans to work on the project together. The weekend arrived for going to Seattle, and the weather had cleared, making it ideal for filming at Spirit Lake. To my disappointment, the art director informed me his wife didn’t want him to go that weekend. Since the plan was for us to work as a team, I let him know, I wasn’t going to hall all the camera gear up the mountain by myself—so we would have to postpone the shoot for another time.

Arriving back in Seattle, I was still disheartened by not going to film at Spirit Lake with such ideal weather. That night, I had this strange dream of being back in Spokane, where I was at my favorite lookout point, getting ready to take some photographic panoramas of the skyline. As I put the camera on the tripod, a clear spring sky turned suddenly dark. It was all vivid and so strange, but what made it even more surreal is… it began snowing gray powder flakes in the warm air as the ground disappeared underneath deposits of gray powder dust. Waking up in the morning I though how odd that dream was from the night before, but soon forgot about it as I had a busy day ahead of me.

As fate would have it, the following morning on May 18, 1980, Mt. Saint Helen’s, erupted with the force of several atomic bombs… burying my intended interviewee, Harry Truman and his lodge under hundreds of feet of volcanic debris. And the dream I had, was a premonition of ash from the eruption, which did make it to Spokane and deposited a blanket of ash, just as I had seen. Interestingly, no geologist or scientist had predicted if an eruption did occur, the result would be…a massive cloud of ash, blanketing hundreds of square miles in gray ash.  It was several days before I could get back to KREM TV, because the mountain passes were closed due to hazardous driving conditions caused from falling ash, which deposited ash on 11 states and parts of western Canada.

I never got a chance to thank my friend’s wife for not allowing him to go with me on that fateful weekend. If I get over to the Spokane area again, I’m going to look my friend up and bring his wife a belated bouquet of flowers for inadvertently saving our lives. ~

Video of Mount St. Helens Eruption

usda Forest Services Video

Interviews with Harry Truman at Spirit Lake

Computer animated video of Mount St. Helens Eruption

Click on the link bellow to view the largest volcanic eruption recorded in history

http://www.youtube.com/watch?v=5ARBjmoHAII

Kradatoa – the largest volcanic eruption recorded in history,

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Blinded By Light, In The Middle Of Night

 

Multimedia eLearning program by: David A. Johanson © All Rights  — Second Edition

The author is a multimedia specialist, CTE instructor and a former Boeing scientific photographer. For an alternative formatted view of this program, please visit — www.ScienceTechTablet.wordpress.com

 

My photo wingman, Rick Wong and I headed into the heart of darkness in a quest for the Perseid meteor showers. Mount Rainier National Park, was our destination to use its iconic landmark for framing an infinite field of stars—far from the glare of city lights. Traveling at night in Rick’s new hybrid Ford Fusion, equipped with “information technology”—voice navigation, made it easy finding the park without using a map.

Arriving at our location, luminous stars lit up the night as expected, but we were surprised by some uninvited competition, which nearly stole the show.

A stunning view of Mount Rainier reflected in Reflection Lake, with the summer stars overhead. The pink and orange glow on the left side of the mountain is light pollution emitted from the City of Tacoma, approximately 65 miles northwest.

We found an ideal location above Reflection Lake to begin our photo shoot, with one of the Cascade Mountain’s most famous stratovolcano in the background. An unexpected warm light was glowing behind Mount Rainier, which I reasoned, was a faint remnant from the earlier sunset. However, the sun had set at least four hours earlier, so it couldn’t be the source of the illumination. Rick suggested “its light coming from the City of Tacoma,” located about 65 miles away. During a 20-second long exposures used to take an image of the snow-capped mountain, I began thinking about the effects caused by light pollution.

With a bright moon rising, we worked fast to keep up with the changing light, until its intensity eventually overpowered the stars.

Just now, the moon was rising higher into the night sky, it too was causing us to shift focus on what to photograph. Like a giant diffuse reflector, the moon reflected soft, filtered light onto a previously dark, formless landscape. Moonlight was beginning to compete with the canopy of stars’ brilliance, partially masking crystal clear views of the Milky Way, along with some meteor sightings. So being photo opportunist, we used the moonlight to illuminate shadow-detail on Rainier’s south face.

Like some sorcerer conjuring an intense cauldron of red light, the photographer adjusts his digital settings before Mount Rainier and her crown of stars above.

A Peaceful Paradise Lost                                                                                             There’s a tranquil feeling while in the process of taking long exposures at night; it’s normally quiet and not many visual distractions overwhelm the senses or interrupt your focus. I personally enjoy these rare opportunities of solitude, to visualize an image, using a minimal, Zen like perspective.

 

When a distraction, like a car suddenly rounding a corner occurs, it’s often an annoyance, which takes you out of the moment. My moment was taken by clusters of cars, with glaring lights as they came around a turn… just as the moon illuminated the mountain, as it was reflected onto a perfectly still lake.. Their headlights flooded the calm mirror-like water and stands of old growth trees beyond with glaring intensity— as I used my hands in an attempt to shield the lens from light flare. Finally, the cars diapered into the darkness with no more approaching vehicles until dawn.

Photo-illustration of micro light sources, which can cause light pollution by unintended spill-light.

Moving above the lake to find new angles for interesting compositions, I took notice of something not seen before. Lights of various colors were coming from photographers bellow me, created by their digital camera’s preview monitors and infrared sensors for auto focusing. With the low light-sensitive Nikon cameras I was using, these multicolored monitor lights, appeared like a bright flare on the long exposure images. Now, I had one more unwelcome light source to avoid, which required strategic timing in the photo’s exposures to minimize glare.

Again, my thoughts returned to the issues of light pollution. Recalling the time back home, when I attempted to photograph some constellations at night, only to have a neighbor’s motion sensor flood light, overwhelmed the backyard with brightness. The piercing light  forced me to find the last remaining, isolated shadowed corner of the yard.

My reminiscing was cut short by a distant, but bright, pinpoint of light from bellow Mount Rainier’s summit. Flashlights from mountain climbers near Camp Muir shined bright—like lighthouse beacons from the semi darkened rocks and glacier fields on the mountain. Even the faintest light can shine bright at night as was noted during World War II, when warships were forbidden from having any exterior lights on at night — including a lit cigarette, which posed a risk of being spotted from great distances by enemy submarines.

Lights from mountain climbers on the approach to the summit of Mount Ranier.

Encountering the Universe’s Brilliance                                                                       The improper, overuse of outdoor lighting has erased one of our basic and most powerful human experiences—encountering the universe’s brilliance with its galaxies and billions of stars shining in the night sky! Making visual contact with our own galaxy, the Milky Way, is one of the greatest shows seen from Earth.

 

In less than a century of civilization’s reliance on electric technology: two-thirds of the U.S., half of Europe and a fifth of people in the world—now live where they cannot see the Milky Way with the unaided eye. You can appreciate how we lost our stellar view by seeing aerial photos taken from orbiting spacecraft and the International Space Station. These startling images taken of the Earth at night, reveal a man-made galaxy of artificial light, which cancels out much of the real one in the sky above.

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Some years back, I was a part-owner in a small recreational ranch, in Eastern Washington’s, Okanogan County. Brining friends over from Seattle, it was often nighttime when we arrived. The instant of exiting the cars, was a startling event as the Milky Way’s intensity of light overwhelmed your senses. The “ranch” was remotely located, at about 5,000 feet in the mountains, near the Canadian border and 30-miles from the closest town. Days would go by where we didn’t see a car or even hear a small airplane go overhead… it was one of the most refreshing experiences of my life, to perceive nothing except wind going through trees and seeing only starlight at night for hours at a time.

Image courtesy of NASA

A television interview with the director of a major observatory in Southern California recounted when Los Angeles had its last electrical blackout —people were calling 911 and his observatory, with reports of strange, bright objects in the night sky. Actually, what the callers were seeing for the first time, was the Milky Way’s canopy of shining stars.

   

Image courtesy of NASA.

Besides forfeiting a life inspiring, wondrous view of the cosmos, there’s tangible losses associated with light pollution. Conservative estimates are—30 % of U.S. outdoor lighting is pointed skyward in the wrong direction, which wastes billions of dollars of electricity. The unnecessary practice of lighting clouds, burns more than 6 million tons of coal, which adds: harmful greenhouse gas emissions, along with toxic chemicals into our atmosphere and water.

Further scientific studies indicate wildlife is suffering the ill effects of excessive urban lighting. The City of Chicago has taken measures to turn off or dim its high-rise lighting to enable migrating birds to continue normal migration patterns. An increase in species of insects attracted to light along with rodents, which are drawn towards bright city lighting, is a growing concern to many scientists.

Heavy equipment product shots never look quite this good. Scheduled improvements to the viewing area above Reflection Lake, had some equipment, taking a nap, before going to work when the sun came up.

Education Is the Solution to Light Pollution                                                                    The reason light pollution continues to expand is, we have grown accustomed to its seemingly benign presence. After all, probably no one can point to a single case of a person killed from overexposure to light pollution. However, there is a growing correlation of health risks associated with overexposure from artificial light. Some of the main symptoms include, physical fatigue and damage to eyesight. This lighting health risk was recognized in 2009, when the American Medical Association officially established a policy, which supports the control of light pollution.

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Municipal lighting codes are beginning to help define and eliminate unnecessary light pollution. Lighting enforcement can create a more pleasing environment, by reducing excessive urban lighting, which causes fatigue from glare and cuts down on unnecessary electric utility cost. Redirecting outdoor lighting away from the sky where it is needlessly wasted is a simple and easy solution.

Installing motion detector security lights are another efficient and productive mitigation strategy. For security purpose, a light, which is triggered by motion is much more effective for crime prevention than a continuous floodlight. Motion detector lights have a clear advantage of focussing our attention onto an area, which is triggered by a sudden change from darkness to bright-light.

The light intensity of the Milky Way is a breathtaking wonder to witness at night —` unrestricted light-pollution has faded this wonder from what was once a valued human experience. You can see the Andromeda Galaxy in the right 1/3 of the frame. Nikon D700 – Nikkor 28mm lens @ F3.5 @ 20 seconds August 11 11:48 p.m.

 

The encouraging news is… the key to reducing light pollution is a simple matter of basic education and action. Public awareness of over-lighting requires a minimal expenditure, which will quickly pay for itself in energy savings and perhaps return the opportunity to experience one of the greatest shows seen from earth. ~

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Light pollution glossary:

Urban Sky glow: the brightening of the night skies over municipalities and communities, caused primarily from high-volumes  of collective, reflected light and poorly directed light, which is pointed upward or not shielded properly.

Light trespass: light falling or spilling into areas where it is not intended. Also know as “spill light” – as in municipal streetlights, which go beyond the intended illumination of street signs and sidewalks, causing an unwanted exterior lighting of residential homes.

Glare: A direct, bright or harsh light, which causes discomfort or pain. The effects of glare can be reduced or eliminated with the use of a shield or filter.

Uplight: Light angled inappropriately upward towards the sky and serving no purpose. Uplight washes out the night sky and reduces opportunities for astronomers and star-gazer to enjoy the beauty of the planets, moon and stars.

Light Clutter: Poorly planned, confusing and unpleasant use of grouped lights usually associated with urban or retail lighting. Retail business often trying to outdo the competition by using overly bright, multicolored or pulsating lights.

Links to articles & information on light pollution:

http://news.discovery.com/animals/light-pollution-a-growing-problem-for-wildlife.html

www.darksky.org/assets/documents/is001.pdf

www.njaa.org/light.html

www.skymaps.com/articles/n0109.html

en.wikipedia.org/wiki/Light_pollution

ngm.nationalgeographic.com/geopedia/Light_Pollution