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Light Pollution discussed the New York Times
http://forum.astra-nj.org/viewtopic.php?f=3&t=935
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Author:  BetaDraconis [ Fri Jun 10, 2016 11:47 pm ]
Post subject:  Light Pollution discussed the New York Times

Light Pollution Masks the Milky Way for a Third of the World’s Population

http://www.nytimes.com/2016/06/11/scien ... skies.html

Quote:
Mr. Falchi and a cohort of dark-night knights have spent the last year creating an interactive world atlas that shows the global effect of artificial light on how most of us see the sky after the sun sets. They released the map to the public on Friday in the journal Science Advances. The new atlas is an improved version of their original one, which was released in 2001.


Image

Of course, check out more of the informative NYT infographic.

Author:  BetaDraconis [ Wed Jun 29, 2016 2:36 pm ]
Post subject:  Re: Light Pollution discussed the New York Times

Light pollution might be causing spring to start a week early

http://www.sciencealert.com/spring-is-a ... -pollution

Quote:
(T)hanks to the bright lights of our big cities, the trees think spring is arriving ahead of time, and the new study notes a time shift of up to 7.5 days in some parts of the country and that this early budburst is likely to have a knock-on effect on other animals and plants too.

Author:  BetaDraconis [ Sat Aug 20, 2016 5:51 am ]
Post subject:  Re: Light Pollution discussed the New York Times

This awesome video shows how different the night sky looks without light pollution

http://www.sciencealert.com/watch-the-d ... -night-sky

2m53s for your viewing pleasure.

Image

Author:  BetaDraconis [ Sat Aug 20, 2016 6:56 am ]
Post subject:  Re: Light Pollution discussed the New York Times

You can learn a lot about cities by how they light up at night

http://www.vox.com/2015/1/6/7496749/city-lights-space

[img]blob:https://imgur.com/a657edee-b555-4636-9848-63ea4a94c4c7[/img]

Quote:

The researchers also found a striking difference in lighting patterns between East and West Berlin — a legacy of the old Cold War split. The nighttime lights in East Berlin give off an orange hue, largely from older low-pressure and high-pressure sodium lamps. West Berlin, by contrast, emits more white light, likely because there are more modern LEDs and fluorescents.

What's striking is that East Berlin emits more intense light per capita at night, even though the area is poorer. Indeed, that's true throughout Germany — East German cities that used to be behind the Iron Curtain are brighter than West German cities of similar size.

It's not entirely clear what accounts for the difference. In Berlin, at least, one possible factor here is that the city still uses some 40,000 gas lamps for lighting, which are difficult to detect from space. (Many of those lamps are in the West.) Another factor, the researchers note, is that Berlin's lighting policy advises using outdoor lighting only "when sensible and necessary." That came after a study between 2006 and 2008, which found that levels of lighting didn't actually make the streets any safer.

Author:  BetaDraconis [ Tue Sep 13, 2016 6:18 pm ]
Post subject:  Re: Light Pollution discussed the New York Times

Light Pollution Atlas Shows Why 80 Percent of North Americans Can’t See the Milky Way

https://www.technologyreview.com/s/6023 ... milky-way/

Quote:
The results make for impressive viewing. Falchi and co have created an atlas of light pollution for the entire planet that reveals how bad the problem has become. “We found that about 83% of the world’s population and more than 99% of the U.S. and European populations live under light-polluted skies,” they say.


Full paper at arXiv: https://arxiv.org/abs/1609.01041

Author:  BetaDraconis [ Wed Nov 02, 2016 9:29 am ]
Post subject:  Re: Light Pollution discussed the New York Times

Light Pollution is more Dangerous than you Think!

http://www.seeker.com/light-pollution-i ... 24627.html

Quote:
Baby sea turtles, for instance, make a nighttime dash to the water when they hatch on the beach. But light pollution can confuse the little fellas, sending them in the wrong direction, and into the mouths of predators. Plankton and coral reefs have trouble too, as excess light throws off their rhythms. As for us humans, there's evidence to suggest light pollution impedes production of the antioxidant melatonin, which can increase cancer risk.

Author:  BetaDraconis [ Fri Nov 11, 2016 1:11 pm ]
Post subject:  Re: Light Pollution discussed the New York Times

Reykjavik to switch off street lights for Northern Lights

http://icelandmonitor.mbl.is/news/natur ... northern_/

Only for an hour, but it'd be nice if the lights went out altgether for the week including the new moon.

Or if they just went out, period.

Author:  BetaDraconis [ Tue Jan 31, 2017 3:43 pm ]
Post subject:  Re: Light Pollution discussed the New York Times

What Phoenix Can Teach Us About Reclaiming the Night Sky

http://www.nbcnews.com/mach/space/here- ... ky-n710766

Author:  BetaDraconis [ Mon Apr 03, 2017 8:14 am ]
Post subject:  Re: Light Pollution discussed the New York Times

A light pollution atlas

https://djlorenz.github.io/astronomy/lp ... /dark.html

Author:  doctorcos [ Mon Apr 03, 2017 9:35 pm ]
Post subject:  Re: Light Pollution discussed the New York Times

This atlas clearly shows how much better the skies are in the western half of the United States. Try to spend several nights each year at an astronomy inn in the southwestern United States. See
http://gosw.about.com/od/informationfor ... kies_2.htm

Author:  BetaDraconis [ Fri Jun 23, 2017 5:06 pm ]
Post subject:  Re: Light Pollution discussed the New York Times

An astronomical phenomenon outshone by light pollution

Mysterious ‘Bright Nights’ Phenomenon Solved

http://mysteriousuniverse.org/2017/06/m ... on-solved/

Quote:
The data showed that when more than one of these waves sync up, they can create a higher concentration of oxygen atoms which emit green wavelengths of light as they recombine after being split by sunlight, causing a faint but visible green glow throughout the nighttime sky.

Author:  BetaDraconis [ Sat Sep 16, 2017 4:43 pm ]
Post subject:  Re: Light Pollution discussed the New York Times

Idaho wants to create a 1,400-square-mile reserve for the stars

https://theweek.com/speedreads/725054/i ... erve-stars

More substantial article:

Idaho hopes to bring stargazers to first US dark sky reserve

http://www.idahostatesman.com/news/busi ... 61901.html

Quote:
Leaders in the cities of Ketchum and Sun Valley, the tiny mountain town of Stanley, other local and federal officials, and a conservation group have been working for several years to apply this fall to designate 1,400 square miles (3,600 square kilometers) as a reserve. A final decision by the association would come about 10 weeks after the application is submitted.

Author:  doctorcos [ Thu Sep 28, 2017 2:12 pm ]
Post subject:  Re: Light Pollution discussed the New York Times

It would be nice to have a map, with county boundaries, showing the amounts of light pollution at locations in New Jersey, New York, and Pennsylvania. Wait no longer. Someone took the time to do this:

http://astro-observer.com/dark/lpmappanjny.html

Author:  BetaDraconis [ Sat Nov 25, 2017 8:53 am ]
Post subject:  Re: Light Pollution discussed the New York Times

Darkness isn't what it used to be - and that's not good

http://www.smh.com.au/world/darkness-is ... zravm.html

What's worse is that people are insisting on the bright white-blue LEDs being installed as streetlights rather than LEDs with warmer colors akin to sodium lamps. Source is friend who is an engineer up in New Hampshire who does energy consulting.

Relevant quote:

Quote:
"Whenever you make lights more efficient, you just don't save energy," Kyba said. "What happens instead is that people put more lights up."

Author:  BetaDraconis [ Mon Jan 01, 2018 8:38 am ]
Post subject:  Re: Light Pollution discussed the New York Times

The End of Night: Global Illumination Has Increased Worldwide

https://www.scientificamerican.com/arti ... worldwide/

Quote:
The spread of lit areas could threaten animal ecology and human health


Pretty much reiterating much of what's been said about light pollution over the years, esp. in the 21st century.

Author:  BetaDraconis [ Tue Jan 16, 2018 11:54 am ]
Post subject:  Re: Light Pollution discussed the New York Times

The dark side of light: how artificial lighting is harming the natural world

https://www.nature.com/articles/d41586-018-00665-7

Quote:
The world is lit at night like never before, and ecologists are assessing the damage.

Author:  BetaDraconis [ Wed Jan 24, 2018 12:18 pm ]
Post subject:  Re: Light Pollution discussed the New York Times

How the Dark Sky Movement Is Making Cities Healthier for People and for Wildlife

https://www.alternet.org/environment/ho ... d-wildlife

Quote:
Light pollution eliminates much of the night sky, and with harmful effect.

Author:  doctorcos [ Sun Jan 28, 2018 12:42 am ]
Post subject:  Re: Light Pollution discussed the New York Times

We ought to have our streetlights closer to the ground, not on the tops of telephone polls. Maybe like what they have in the Netherlands. See the attachment. I think this would cause less light pollution.

Attachments:
Streetlights in the Netherlands.PNG
Streetlights in the Netherlands.PNG [ 2.44 MiB | Viewed 1464 times ]

Author:  BetaDraconis [ Sun Jan 28, 2018 4:27 pm ]
Post subject:  Re: Light Pollution discussed the New York Times

Those lights would work even better if they were parallel to the ground, rather than being up at an angle.

Author:  doctorcos [ Mon Jan 29, 2018 1:32 am ]
Post subject:  Re: Light Pollution discussed the New York Times

Tuscon, Arizona has laws to reduce light pollution. Attached is a picture of streetlights that point down on a main street there.

Attachments:
Streetlights in Tuscon, AZ.PNG
Streetlights in Tuscon, AZ.PNG [ 2.16 MiB | Viewed 1446 times ]

Author:  BetaDraconis [ Wed Feb 21, 2018 8:45 am ]
Post subject:  Re: Light Pollution discussed the New York Times

Show other people what they're missing thanks to light pollution.

Attachments:
lightpollution.jpg
lightpollution.jpg [ 64.42 KiB | Viewed 1101 times ]

Author:  BetaDraconis [ Mon Apr 16, 2018 5:36 pm ]
Post subject:  Re: Light Pollution discussed the New York Times

10 Dark-Sky Parks in the U.S. You Need To Visit

http://www.skyandtelescope.com/astronom ... -to-visit/

Author:  BetaDraconis [ Sat May 26, 2018 10:48 am ]
Post subject:  Re: Light Pollution discussed the New York Times

5G Streetlights May Be Causing Mysterious Ailments

http://mysteriousuniverse.org/2018/05/5 ... -ailments/

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