In the article “Our Vanishing Night,” the author, Verlyn Klinkenborg, informs the readers that using too much light at night is a problem not only for humans, but for many other living organisms. He begins his article by describing that humans are diurnal creatures that prefer to live in the light, so humans make the night as bright as the day, thus extending our days and shortening our nights. More importantly, during the night, the exposure to light during our sleep makes our body think that it is day, which makes our sleep more restless, ruins our circadian rhythm, and makes us more tired during the day. This light pollution is also disastrous to astronomers, who need the dark sky to study distant stars. The nighttime sky now looks unnatural,