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April 26 2013

New LED Streetlight Design Cuts Light Pollution


Streetlights are so bright they can be seen from orbit and even might tell aliens we’re here on Earth.

But the lights are misdirected. They often illuminate places that don’t need to be illuminated and create light pollution that makes life harder for astronomers and amateur stargazers to see the night sky and can even confuse migratory birds, leading them to crash into buildings.

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