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Light Pollution 101 | National Geographic

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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
https://youtu.be/V_A78zDBwYE

National Geographic
https://www.youtube.com/natgeo
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