Paul Bogard raises many valid arguments in preserving darkness and trying to reverse the effects of light pollution. Not only does he state that our bodies need darkness but he also states that it is necessary for the future of our planet to preserve darkness in its entirety. The use of concrete facts in this excerpt incredibly benefits in his effort to persuade the reader. In most countries light pollution is a colossal problem. "Yet all over the world, our nights are growing brighter. In the United States and western Europe, The amount of light in the sky increases an average of about 6% every year." Bogard is using this very eye opening fact in an attempt to make the audience realize how grave the situation of light pollution is. Bogard is also using this fact to relate to the audience because it is something that is always surrounding them.. the darkness...…show more content… One of them that was extremely important is when he states that, "Our bodies need darkness to produce the hormone melatonin, which keeps certain cancers from developing, and our bodies need darkness for sleep." He is using this to get into the main exigence of his essay, that light pollution even effects humans in the way that they function. If nothing in this excerpt got the attention of the audience, this must have because it has something to do with how we as humans function. To conclude, Paul Bogard uses emotion and facts to persuade the audience in working with him in the fight against light pollution for the benefit of not only the humans but also the planet, nature and animals. His tone that he uses also assists in the persuasion of the
