Light Pollution 101 | National Geographic

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. ➡ Subscribe: http://bit.ly/NatGeoSubscribe #NationalGeographic #LightPollution #Educational About National Geographic: National Geographic is the world s premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what s possible. Get More National Geographic: Official Site: http://bit.ly/NatGeoOfficialSite Facebook: http://bit.ly/FBNatGeo Twitter: http://bit.ly/NatGeoTwitter Instagram: http://bit.ly/NatGeoInsta Light Pollution 101 | National Geographic https://youtu.be/V_A78zDBwYE National Geographic https://www.youtube.com/natgeo