In the essay, “Our Vanishing Night”, Verlyn Klinkenborg discusses light pollution. Light pollution is due to human’s use of artificial light during the night. Klinkenborg uses examples of how this type of pollution effects not only humans and their biological clocks, but how it effects other organisms in the wild. In this essay, I will analyze the author argument and aspects of it that includes authority, topic, tone, context, exigence, and audience to determine whether the essay was effective or