1. The science of street lights: what makes people feel safe at night
- Author: theconversation.com
- Date Submitted: 08/01/2019 04:26 PM
- Average star voting: (4.99/5 stars and 14492 reviews)
- Summary: Street lighting may not actually reduce crime – but it can make people feel safer at night.
- Match with the search results: Sep 28, 2018 … Street lights may or may not have an effect on crime, but one thing’s for sure – brighter levels of light do make people feel safer when walking …
2. Streetlights Disrupt Night-Time Sleep in Urban Black Swans
- Author: www.frontiersin.org
- Date Submitted: 05/05/2019 04:53 AM
- Average star voting: (3.89/5 stars and 43336 reviews)
- Summary: Artificial light at night could have widespread and detrimental impacts on sleep. To reduce disruptive effects of artificial light on sleep in humans, most smartphones and computers now have software that reduces blue light emissions at night. Little is known about whether reducing blue light emissions from city lights could also benefit urban wildlife. We investigated the effects of blue-rich (white) and blue-reduced (amber) LED streetlights on accelerometry-defined rest, electrophysiologically-identified sleep, and plasma melatonin in a diurnal bird, the black swan (Cygnus atratus). Urban swans were exposed to 20 full nights of each lighting type in an outdoor, naturalistic environment. Contrary to our predictions, we found that night-time rest was similar during exposure to amber and white lights but decreased under amber lights compared with dark conditions. By recording brain activity in a subset of swans, we also demonstrated that resting birds were almost always asleep, so amber light also reduced sleep at night. We found no effect of light treatment on total (24 h) daily rest or plasma melatonin. Our study provides the first electrophysiologically-verified evidence for effects of streetlights on sleep in an urban animal, and furthermore suggests that reducing blue wavelengths of light might not mitigate these effects.
- Match with the search results: Apr 21, 2020 … Artificial light at night was manipulated by installing six LED streetlights (IP66 LEDway® SLMTM Streetlight 4,000 K, Ruud Lighting, Racine, WI, …
3. Defective LED Streetlights Are Turning the Night Purple
- Author: futurism.com
- Date Submitted: 07/26/2020 12:20 PM
- Average star voting: (3.97/5 stars and 48170 reviews)
- Summary: LED streetlights that replaced their sodium-vapor predecessors are turning blue and purple. And the problem may all stem from one company.
- Match with the search results: Dec 1, 2022 … Seen any purple street lights around town? While they put off a serious Cats vibe, it’s actually a manufacturing defect of some LED bulbs, …
4. News List | Atlanta, GA
- Author: www.atlantaga.gov
- Date Submitted: 07/09/2019 06:58 AM
- Average star voting: (3.98/5 stars and 63604 reviews)
- Match with the search results: Apr 28, 2021 … … of 10,000 Streetlights as Part of “One Atlanta—Light Up the Night” … “Streetlights are proven to help prevent both crime and traffic …
5. Streetlights reduce moth populations
- Author: butterfly-conservation.org
- Date Submitted: 06/04/2021 01:00 PM
- Average star voting: (3.9/5 stars and 61406 reviews)
- Summary: While it has been known for millennia that moths (and other nocturnal insects) are attracted to light, the impact on insect populations of the ongoing global increase in night-time lighting
- Match with the search results: Aug 26, 2021 … Research into the impacts of artificial light at night on moths has proliferated in recent years, revealing effects on behaviour and development …
6. Nighttime Streetlights Are Stressing Out Urban Insects
- Author: www.sciencefriday.com
- Date Submitted: 01/13/2020 03:32 AM
- Average star voting: (3.64/5 stars and 29911 reviews)
- Summary: New findings suggest that streetlights are contributing to the decline of insect populations.
- Match with the search results: Sep 17, 2021 … But now, new findings suggest yet another culprit may be part of the equation: night-time lighting, like street lights in populated areas.