What are the consequences of our pollution ? A major consequence: acid rain.
Light Pollution: Kinds, Consequences, & Solutions
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Transcript of Light Pollution: Kinds, Consequences, & Solutions
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Light Pollution Kinds, Consequences, & Solutions
May 2014
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There are 4 Kinds of Light Pollution
• Glare
• Over-illumination
• Light Trespass
• Skyglow
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GlareA bright light in your field of view can make it impossible for your eye to adapt to see in your otherwise dark surroundings
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Over-illuminationThe excessive use of light
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Light TrespassUnwanted light originating from beyond your property.
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SkyglowLight that made it up to the atmosphere to be scattered back
down to earth. A sky affected by skyglow never really gets dark.
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Light Pollution has Consequences
• Wastes Energy
• Affects human and animal health
• Changes Ecosystems
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Wastes EnergyLight that is not directed down toward the ground where it
can be used is completely wasted—no one uses it.
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Harmful to Life• Artificial light at night was
introduced to life on Earth relatively recently. Life had adapted to bright days and dark nights.
• After hatching sea turtles use moonlight to find their way to the ocean. Additional lights hinder their ability to get to the ocean.
• Many insects are thought to use moonlight to navigate. Additional lights make it impossible for them to function at night.
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Changes EcosystemsBats are known to avoid foraging in heavily light polluted areas. An ecosystem can change drastically when bats abruptly stop foraging and dispersing seeds.
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Solutions to Light Pollution Problems are Surprisingly Simple
• Shield lights
• Only use light where and when needed
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Shielded lightsA properly shielded light allows no light to go upwards where
it can’t be used, yet still amply lights the area around it.
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Use light only where and when neededTurn off lights when they’re not in use. Don’t use more light
than you need in an area.
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Enjoy the starsHelp stop the loss of the night sky by doing your part to fight
light pollution.