A company called Reflect Orbital wants to illuminate the Earth after sunset with orbital sky mirrors, raising alarm bells.

It was a dark and stormy night. (I've always wanted to start off with that line.) You were driving home from work. The rain had finally stopped, but the roads were wet and shiny, making it difficult ...

Before electricity, most people went to bed at sundown because their homes were dark. Candles, the glow of a fireplace and, by the 19th century, lamps using whale oil, lard, kerosene or gas added a ...