Are LED street lights damaging YOUR health? Doctors warn the bright lamps could cause sleep problems
The warm yellow glow of street lamps are being replaced by the cold white light of LEDs throughout the world in an attempt to save energy. But this comes at a cost, with doctors warning they could be ...
There's a handy trick for reading station signs that otherwise fly past in a blur as you travel in a high-speed train. Look at one side of the window and then immediately at the other side of the ...
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