If God or angels or extraterrestrials were indeed monitoring us from above, the most profound change they would have witnessed on this planet since its creation is the pernicious illumination of our nights. Satellite images taken of the planet at night reveal that it is glowing brighter with each passing year. Overexposed to light at night, many of us unknowingly suffer from a darkness deficiency. Darkness is not just the absence of light; it’s also a kind of nourishment — a bittersweet chocolate for the soul. It’s best to sleep in total darkness.