9 Amazing Night Sky of 9 Darkened Cities by thierrycohen via 9gag #Night_Sky #Light_Pollution

9 Amazing Night Sky of 9 Darkened Cities by thierrycohen via 9gag #Night_Sky #Light_Pollution

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What is light pollution? What problems does it cause and how do you combat it? This infographic answers all these questions for you.

What is light pollution? What problems does it cause and how do you combat it? This infographic answers all these questions for you.

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The Earth At Night - photos by NASA. See the video here http://www.youtube.com/watch?feature=player_embedded=Q3YYwIsMHzw#!

The Earth At Night - photos by NASA. See the video here http://www.youtube.com/watch?feature=player_embedded=Q3YYwIsMHzw#!

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Image showing England,, Scotland and Wales's location of 2,386750 road crashes from 1999 to 2010. Each light point is an individual collision which resulted in a casualty. The intensity of brightness shows where collisions are more frequent

Image showing England,, Scotland and Wales's location of 2,386750 road crashes from 1999 to 2010. Each light point is an individual collision which resulted in a casualty. The intensity of brightness shows where collisions are more frequent

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Light Pollution: The Dark Side of Outdoor Lights http://www.delmarfans.com/educate/basics/lighting-pollution/ #outdoor #lighting

Light Pollution: The Dark Side of Outdoor Lights http://www.delmarfans.com/educate/basics/lighting-pollution/ #outdoor #lighting

The Earth at Night - Nothing demonstrates population and wealth like the warm glow of cheap electricity from space.  Also, check out the Russian equivalent of manifest destiny...not quite as comprehensive as the American version, but then California is a lot nicer than Siberia.

The Earth at Night - Nothing demonstrates population and wealth like the warm glow of cheap electricity from space. Also, check out the Russian equivalent of manifest destiny...not quite as comprehensive as the American version, but then California is a lot nicer than Siberia.

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