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Light Pollution 101 | National Geographic ctm magazine

Ever since the light bulb’s invention 150 years ago, artificial light has illuminated homes, streets, and skies — but with some unintended consequences. Learn about the major types of light pollution, their impact on human health, and how the worldwide glow from artificial light may continue to grow.
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Light Pollution 101 | National Geographic

National Geographic



  • National Geographic on January 25, 2019

    Light pollution is the over illumination of cities and night skies by artificial lighting. What are your thoughts on its unintended yet harmful impacts on the world?

  • Louise Green on May 7, 2020

    Is there going to be another better in the furture

  • Louise Green on May 7, 2020

    Omg I love national geographic it's even better going to trampoline park

  • JR on May 10, 2020

    Light pollution might actually one of the most ignored pollution.

  • Nevaeh Richer on May 11, 2020

    i love this video its lots of information

  • Ed venuto on May 19, 2020

    Thomas Edison inventor

  • Hozana Soares on May 23, 2020

    Queria que esse vídeo tivesse tradição.
    Canal : Área das Gêmeas

  • nelson a on May 29, 2020

    irresponsible people disliked the video

  • Zaki on May 31, 2020

    How about designing street lights that has infared sensors wich turns on when it detects.

  • Tass on June 20, 2020

    Imagine if just for 5 min the whole world stop lighting, what are we gonna see ?

  • Kim-jong Un on June 25, 2020

    So you’re telling me lightbulbs kill sea turtles great…

  • Rogers Photography on August 25, 2020

    Succinct. Well done!

  • Alex Buenaventura on August 30, 2020


  • Juan Barrales on November 20, 2020

    so cool

  • Juan Barrales on November 20, 2020

    have fun

  • Juan Barrales on November 20, 2020


  • Azan Uan on December 4, 2020

    Day – sun light
    Night – darkness

    People need to learn and feel the true beauty of this planet.

    Using artificial light in closed up space is like making a prison of your own room. Especially during the day is dreadful.

  • Furbs on December 16, 2020

    Alway choose amber color lights 2500 Kelvin or less. Turn light off. Use light only necessary fully shield lights.

  • Rizky Fajar Farhansyah on January 5, 2021

    Meanwhile me at minecraft: Torches Everywhere!

  • Hiking with Marty on January 6, 2021

    In years to come cities will stretch out horizontally…–everything will become infrastructure bathed in artificial light and energy.
    -Jean Baudrillard. (Amérique, 1986)

  • Nikitas on January 8, 2021

    ok cool

  • Ibrahim Jubayer on January 10, 2021

    The turtle part was Amazing

  • Anonymous Boozer on January 31, 2021

    121 people with IQs far too low to even qualify to ride a short bus disliked this video

  • Jonathan Denton on February 26, 2021

    Part of the problem comes from the shape of the light fitting. If you have a lense/diffuser that's bowl shaped, all the light can escape in any direction. If you have a flat lense that points downwards, none of the light can escape above the horizontal plane and it'll all be directed downwards.

    Also as nice as decorative outside lighting can be, we should restrict our use of it to either special occasions or for one or two hours after sunset.

  • Kyle G on February 28, 2021

    Jesus died for you!

  • Олег Ларкин on March 11, 2021

    Вот они!!! Масоны-иллюминаты!!! Все небо изгадили!!!

  • I dislike man's destruction of Earth, but there is one perspective worth consideration. I find it an interesting situation. How rare & unique it must be to have a planet inhabited by sentient beings who through their intellect light up their night skies so much that they can be seen from space . I wonder if any other worlds have such a feature. Until the light bulbs invention, such a short time ago, such was not the case on Earth. Are we the first species to light up our night skies?

  • No name on March 26, 2021

    I wish i lived before this stupid technology. The fact that we will die without seeing the true night sky makes me want to cry

  • Md Riyaz on April 3, 2021

    Excellent certain bulbs produces uv radiation which effects human eyes ok

  • Lucyana Agatha on May 19, 2021

    video yang bagus.

  • Too strong 4 2 long on May 27, 2021

    I realize Chicago got this bad. 😭 isn’t it the worst one. We need to fix it TBH!!

  • Too strong 4 2 long on May 27, 2021

    I found this out from what Hong “driving around Chicago” videos.

  • RAJENDRA(UMED)SINGH TAK on September 11, 2021

    Panch mahabhuto ke niyam se sristi main santan dharm ke sanvidhan bane hai aur is sanvidhan ko hum Samast sristi main manushyon ke liye lagu karenge taki panchmahabhuto ko koi vikrat karne ka prayaas na Kar sake jitni vikrati manushyo ne paida ki sristi ka apmaan Kiya hai uska parinaam sristi main rahne wale sabhi Jeev bhugat rahe hai. ab samay aa gaya hai ki sab jaag Jaye ek sukhad bhavishya nirman ke liye.KALKI 🕉MAA 🕉 Vande Matram 🕉satyemeva Jayate nanrtam satyen pantha vitato devayanah.yenakramantyrsayo hyptakama yatra tat satyasya paramam nidhanam. 🕉

  • Piyush Mishra on September 21, 2021

    But we invented bulbs to mitigate the Dark Pollution.

  • ⟭⟬ • 𝘔𝘺stery┆ on October 3, 2021

    cannot see all the Millions of Stars
    because of the brighter City streets
    Over Shining rhe star lights

  • James Evitts on October 26, 2021

    I don’t understand how light pollution could give you cancer. Please help

  • WEI WEI on October 28, 2021
  • talbotpassant on December 9, 2021

    I live right across from my town hall and their lights are horrible. I have blackout curtains with thumbtacks on the side of them and there’s still tons of light in my room at night. It’s a small town, too! Imagine the effect it has on the animals outside. Light pollution is talked about far too little.

  • RP SC on January 6, 2022

    Wow, we managed to accomplish polluting with light…

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