Consequence of Artificial Light Essay examples -- Essays Papers

Consequence of Artificial Light Our world is an ever changing place, in the last 100 years we have seen more technological advances than ever in the preceding years of history. We have built computers, gone to the moon, developed x-rays, microwaves, telephones, and the incandescent light. A seemingly small invention, the light has forever placed its mark not only on the human race, but on the earth itself. In pictures taken from space, we can see that much of the world is lit 24 hours a day, which begs the question: is that much light good for us? It is not an easy question to answer, but in this essay, I hope to examine some of the history that has brought us to the situation that we are in as well as some of the possible solutions to try and cope with a world that has become addicted to never-ending light. As our knowledge of the world grows, so too does our understanding of the health hazards that excessive light during the night can bring to the human body, and this understanding has led to many interesting discoveries. The search for medical understanding that too much light in the dark hours is poor for health was begun by astronomers who were dismayed at the growing loss of darkness in the night sky, but has quickly grown to include, medical researchers, city planners as well as average people in the community that are unhappy with the excessive amount of light that is prevalent today. One of the major discoveries that have been made in recent history is the finding of a photo receptor that sets circadian rhythms1. Cryptochrome is a protein that is sensitive to blue light, and it is theorized that in the morning and evenings, when blue light is most prevalent, this protein helps humans adjust their internal... ...roduce into our lives and culture, the more problems begin to arise, it is time that some major steps need to be taken to help stop this problem, and I hope that some of the solutions outlined above will be a good start. References: 1:http://www.eurekalert.org/pub_releases/1998-11/BU-TBSS-231198.php 2:http://www.peerless-lighting.com/p20_body.htm 3:http://library8.municode.com/gateway.dll/RI/rhode%20island/875? f=templates&fn=default.htm&npusername=11458&nppassword=MCC&npac_credentialspresent =true&vid=default 4:http://www.dep.state.pa.us/dep/deputate/pollprev/lighting/outdoor.htm 5:http://www.turtles.org/threats.htm 6:http://www.learner.org/jnorth/tm/NightLights.html 7:http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?holding=f1000&cmd=Retrieve&db=P ubMed&list_uids=12495746&dopt=Abstract 8:http://www.darksky.org/infoshts/is012.html