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.

#NationalGeographic #LightPollution #Educational

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Light Pollution 101 | National Geographic

National Geographic

[NatGeo]

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?

[rea]

As someone who grew up in a rural area, I always freak out when I go to a big city because the sky is totally artificial. I actually think that not being able to see stars cuts you from nature and therefore don't help thinking about conserving it

[jasminekelleelyngdoh]

With great power comes great responsibility.

[SupremeLeaderKimJong-un]

My country has no light pollution what so ever, probably because we have blackouts on a daily basis, Beat that

[sugatasen]

People need to be aware of this aspect of pollution, any effort to spread the awareness is greatly appreciated . It's appalling just how many of us go through life oblivious to the sheer glory of the night sky away from light pollution.

[ClimateChanged]

Turn your lights off! Don't leave the porch light on at night. Get automatic/motion lights

[AzlianaLyana]

Interesting info, especially the one on turtles. Didn't think the impact would affect wildlife directly. Great info National Geographic.

[Scarletdevilish]

My heart felt sick when I heard that light pollution increases 6 to 10% each year... as an a astronomy-lover, stargazer and nature-lover, I'm worried about it. Too worried...

[bigbandfighter]

I was underestimating light pollution. It is actually dangerous and makes sky ugly. Thanks for making this video.

[leeioh]

I’ve been thinking about this...the nights are becoming ruined by the light. I can’t even sleep correctly anymore. We need to shutdown at night!

[MindDataAI]

To avoid being polluted by light, that’s why I wear sunglasses at night like all those big time actors actresses

[rahultheone]

This pollution is mainly in *DEVELOPED COUNTRIES* .They should have think about this. And for the developing countries they should be aware of it.

[lostking]

I wish one day all president around the world make a deal for turning off all light around the world so we can watch the stars perfectly at the night and stop the -light pollution- for at least *1 hour* ..

[ashaydwivedi]

isn't it ironic how arttificial light lights up our world, but it also isolates us from the world beyond ours. it's like decorating your room but it gets smaller and smaller every time

[jonathandenton]

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.

[Psy_fi_prince]

It's a curse. We cannot see any star in the night sky

[dilvggo]

" If you choose death and destruction, then death and destruction will choose you."

[DougGrinbergs]

Thank you for touching on glare, light trespass and sky glow. So many other aspects of the problem, including "insecurity" lighting - the misguided more-is-better approach (think overlit gas stations and car dealer lots). (:-( Gratuitous roadway overlighting with harsh, glaring LEDs a growing problem. (:-( Peace.

[petervilters]

Watching the video, I couldn't help this question popping up in my mind: "Could a decline in bee populations be correlated to (certain kinds of) light pollution?"

[azanuan]

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.