According to the BBC, researches have created a type of LED-powered streetlight that could "radically reduce light pollution."
According to the researchers, conventional street lamps - which use high-pressure sodium or mercury vapour - scatter up to 20% of their energy horizontally or vertically because it is difficult to control their beams.
It is easier to direct light from LEDs because it is being emitted from a smaller area.
So, while manufacturers controlled the direction of the light rays from older lamps using a reflector typically made out of polished aluminium, they can now take advantage of lenses to be more precise.
The researchers say the best LED (light-emitting diode) streetlamps on the market direct about 10% of their energy horizontally or vertically.
But they claim their own invention could further reduce the amount to just 2%.
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