Category Archives: Light Pollution

News and Information on #lightpollution

It’s not just the bane of light sleepers and frustrated astronomers. It also is tinkering with the biological cycles of all kinds of living things, including us!

New Study finds 80% of World Population Lives Under Skyglow

World map of artificial sky brightness. Image from the new “World Atlas of Artificial Night Sky Brightness.

World map of artificial sky brightness. Image from the new “World Atlas of Artificial Night Sky Brightness.” A groundbreaking new study documenting light pollution across the globe finds that more than 80 percent of the world’s population lives under light polluted skies. The United States and Europe have it even worse, with 99 percent of […]

Outdoor lighting can easily be dark sky friendly

Darksky friendly lighting by IDA

Dark Sky Outdoor Lighting Basics Modern society requires outdoor lighting for a variety of needs, including safety and commerce. IDA recognizes this but advocates that any required lighting be used wisely. To minimize the harmful effects of light pollution, lighting should Only be on when needed Only light the area that needs it Be no […]

Unshielded vs Shielded Lights at Night

lights at night and light pollution
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International Dark Sky Week April 4 – 10, 2016

dark sky week
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What is light pollution?

By Jeremy Stanley - originally posted to Flickr as Light pollution: It's not pretty, CC BY 2.0

  Less than 100 years ago, everyone could look up and see a spectacular starry night sky. Now, millions of children across the globe will never experience the Milky Way where they live. The increased and widespread use of artificial light at night is not only impairing our view of the universe, it is adversely […]

Light pollution effects nocturnal and diurnal species

LED light pollution

The Region of Waterloo is drafting proposal for a switch to LED street lighting late 2016 and into 2017. They were initially considering using higher colour temperature (CCT) white light in the range of 4000K. This type of white light encroaches on daylight lighting. It also has a large amount of blue light in it […]