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Ukshep

Artificial lights are eating away at dark nights — and that's not a good thing

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Earth is losing its darkness. A new study using satellite data finds that artificially lit surfaces around the world are spreading and growing brighter, producing more light pollution at night.

The findings, described in the journal Science Advances, track what researchers called a worrisome trend that has implications for the environment as well as human health.

“This is concerning, of course, because we are convinced that artificial light is an environmental pollutant with ecological and evolutionary implications for many organisms — from bacteria to mammals, including us humans — and may reshape entire social ecological systems,” Franz Holker of the Leibniz-Institute of Freshwater Ecology and Inland Fisheries, one of the study’s authors, said in a briefing.

Thanks to electric lights, outdoor lighting grew at a rate of 3% to 6% annually in the second half of the 20th century. While this has benefited human productivity and safety, it has come with a dark side: The night is no longer dark enough.

http://www.latimes.com/science/sciencenow/la-sci-sn-earth-artificial-light-night-darkness-20171122-story.html

Quite alright. Sure a blackout will take care of this!

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As an amatuer astronomer, I can tell you what a huge difference it makes to leave the suburbs for real dark country skies. Animals that need the darkness, or are depending on moonlight, or horizon cues for mating are having a terrible time.

One neighbor had a very bright light, that has since gone out. I will bake them something for christmas to thank them, and hopefully they will leave it off. 

What do folks think they are defending from out here? Is it just a holdover from caveman days?

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