light pollution Archives – The Green Optimistic

Light Pollution May Make Fish More Vulnerable to Predators

Matthew Fiala — Fri, 28 Sep 2018 12:11:21 +0000

Artificial light at night makes guppies more courageous during the day, according to a new behavioral study. Researchers exposed fish to artificial light at night, which not only made them more active during the night, but also made them emerge quicker from hiding places during the day. It is expected that these behavioral characteristics […]

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New LED Streetlight Reduces Light Pollution and Saves Energy

Ovidiu Sandru — Thu, 25 Apr 2013 13:31:44 +0000

Light pollution is one of the biggest sources of pollution worldwide. Because some chemical processes that cleanse the atmosphere only occur in the dark, light pollution prevents these chemical reactions to happen, thus contributing to the chemical pollution throughout the next day and so on. New streetlights designed by scientists in Mexico and Taiwan are now […]

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Hong Kong Light Pollution, Worst in the World?

Benji Jerew — Wed, 20 Mar 2013 23:57:40 +0000

According to a study completed by Hong Kong University, this city of some seven million inhabitants could have the worst light pollution in the world. When we think of pollution, we may think of landfill runoff or oil spills. These types of pollution are damaging to the environment which we live in. The air we […]

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North Dakota Light Pollution Seen From Space UPDATED

Benji Jerew — Tue, 29 Jan 2013 08:01:31 +0000

When looking at satellite photos of the earth taken at night, it is easy to see urban areas as brights spots in a sea of black. Rural areas barely even register on these night shots. The reason for this is mainly because of street and building lighting, and light pollution on a grand scale can […]

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Delft Student Invents Presence-Triggered Street Lighting System, Saves Power

Ovidiu Sandru — Wed, 13 Jul 2011 15:32:05 +0000

A simple energy saving tip for everyone would be to turn off anything they don't use - the first thing that comes to mind are the lights. A student from the Delft University of Technology in the Netherlands has invented a street presence sensor system that dims street lights down to 20 percent when nobody's around.

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Nighttime City Lights Interfere With Natural Air Cleansing Process, Study Says

Ovidiu Sandru — Wed, 15 Dec 2010 20:32:12 +0000

An interesting news regarding how pollution actually works and how nature tries to combat it comes from a National Oceanic and Atmospheric Administration researcher, Harald Stark. He says that during nighttime there's a chemical called the nitrate radical, that breaks down the harmful chemicals emitted during the day by cars and factories.

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