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Light Pollution PowerPoint PPT Presentation


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Light Pollution. The Costs of Poorly Implemented Outdoor Lighting. Light Pollution. Purpose of Lighting What is Light Pollution? Light Pollution’s Effects How to Stop Light Pollution What’s Stopping Us?. Purposes of Lighting. Safety Security Navigation Decoration Advertising.

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Light Pollution

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Light Pollution

The Costs of Poorly Implemented Outdoor Lighting


Light Pollution

Purpose of Lighting

What is Light Pollution?

Light Pollution’s Effects

How to Stop Light Pollution

What’s Stopping Us?


Purposes of Lighting

  • Safety

  • Security

  • Navigation

  • Decoration

  • Advertising


Light Pollution

What is it?


Light Pollution—What is it?

  • Glare

  • Uplight

  • Light Trespass

  • Overlighting

  • Inefficiency


Light Pollution is Glare


Light Pollution is Glare


Light Pollution is Uplight


Light Pollution is Uplight


Light Pollution is Trespass


Light Pollution is Trespass


Light Pollution is Overlighting


Light Pollution is Inefficiency


Light Pollution

Why is it bad?


Why is Light Pollution Bad?

Safety

Security

Social

Waste

Pollution

Health Effects

Ecological Effects


Light Pollution—Safety

  • Reduced visual acuity

  • Recovery time

  • Overlighting


Light Pollution—Security

  • Reduces fear

  • Reduces crime ??


Light Pollution—Social

  • Neighbor-neighbor tension

  • Resident complaints

  • Extreme behaviors


Light Pollution—Waste

  • 30% of light wasted

  • $5,000,000,000+ per year wasted


Light Pollution—Pollution

  • 62 billion kWh = 40 million tons of CO2 = 1.4 million tons SO2 = 1.1 million tons NO

  • Every kilowatt used causes release of:

    • 1.3 pounds CO2

    • 2 grams sulfur dioxide

    • 1.6 grams nitric oxide

selene-ny.org/lightcost.asp


Light Pollution—Human Health

  • Air pollution related problems

  • Melatonin suppression

  • Sleep disruption


Light Pollution—Animals

  • Birds

  • Amphibians

  • Fish

  • Insects


Light Pollution—Plants

  • Water quality

  • Trees

  • Plants


Light Pollution

What can be done?


Light Pollution—What can we do?

  • Technical Requirements

  • Implementation


Light Pollution—Technical

  • Proper shielding


www.darkskysociety.org/handouts/blbn.pdf


Light Pollution—Technical

  • Proper shielding

  • Amount of light

www.darksky.org/infoshts/is077.html

  • Curfews

  • Lamp type

  • Don’t light


Light Pollution—Implementation

  • Master plan

  • Zoning/Planning Board policy

  • Local law/ordinance

  • State law


Light Pollution

What’s holding us back?


Light Pollution—Impediments

  • Lack of education

  • Vested and ulterior interests

  • “We’ve always done it that way”

  • Poorly written laws and policies


More information

  • www.selene-ny.org

  • www.darksky.org

  • www.darkskysociety.org


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