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The hazards and symptoms of light pollution.
Jul 03,2018
It may not be known to everyone that common illuminated billboards can kill about 300,000 insects in a year, as discovered by a recent study by a scientist. In fact, the harm of light pollution around us is also very severe. During the migration of birds, light pollution causes them to lose their direction, leading to collisions with tall buildings and resulting in death.
Many dead baby sea turtles have been found along the coast of the Dogger Bank. It is analyzed that newly hatched baby sea turtles swim towards the ocean based on the reflection of the moon and stars in the seawater. The brightly lit cities along the Atlantic coast dim the moonlight and starlight, causing those baby turtles to mistakenly take land for the ocean, ultimately leading to their death due to lack of water.
At night, the Earth's atmosphere scatters the city lights, maintaining a high brightness. Animals are stimulated by the light, becoming very energetic, while the energy originally used for reproduction, self-defense, and foraging is wasted. Environmentalists have also found that trees close to strong light sources have a shorter lifespan and weaker photosynthesis ability, releasing less oxygen. The phenomenon of artificial light harming plants and animals can be referred to as "light pollution."
In fact, light pollution is also harmful to humans. In recent years, the glass curtain walls of many tall buildings have caused light pollution. Under the summer sunlight, glass curtain walls can be very uncomfortable. In addition to the glass curtain walls of buildings, if the color of indoor walls is too bright, it can also cause visual discomfort. Very smooth white walls have a light reflection coefficient of up to 90%, which is about 10 times higher than that of grass, forests, or rough-textured decorations. Therefore, when painting walls, it is best to use "ecological colors." Ecological colors refer to soft natural colors, rather than bright and glaring colors.
Research shows that light pollution can harm the cornea and iris of the human eye, suppressing the function of retinal photoreceptor cells, leading to visual fatigue and decreased vision. If one works or lives under severe light pollution conditions for a long time, symptoms of mental weakness such as dizziness, irritability, insomnia, decreased appetite, low mood, and physical fatigue may occur.
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