People around the world are losing the night sky. According to a new atlas of light pollution detailed in the journal Science Advances on Friday, more than 80% of the people on Earth live under skies ...

Light pollution is a man-made problem caused by the excessive use of artificial lights, especially at night. These lights can disrupt natural sleep cycles, waste energy, and even mislead migratory ...

Please provide your email address to receive an email when new articles are posted on . Vision is the perception of light. To comprehend the nature of human vision, an understanding of the properties ...

With walls and ceilings a long way away, often the most practical way to control the placement of a light source and the positioning of light, is to drop it into the exact position where it’s required ...