Let There Be Night

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Let There Be Night

• Information from www.nightwise.org

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We need light, right?

• Safety from crime
• Visibility on roadways
• Comfort when walking at night
• Advertising

But we dont need light pollution!
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What is light pollution?

• Glare light striking your eye
• Spillover light that lights up more than it is
  supposed to
• Skyglow light that goes up and makes the sky
  glow

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Glare (light in your eyes)
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Spillover(light beyond where it should be)
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Skyglowlight that makes the sky glow
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Why should I care?

• Spoils the view of stars
• Reduces your ability to see in darkness
• Costs money
• Wastes energy
• Confuses and harms wildlife (sea turtles)

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These are good lights(lights are shielded and
aim down)
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Solutions

• Aim lights downward
• Use lights that are fully shielded
• Reduce light output (not so bright)