Light

Light PollutionHyun Ji Y.Kelsey D.Maddy U.

Country and 

City

picture found at: <http://en.wikipedia.org/wiki/File:Light_pollution_country_versus_city.png>.

the entire world

picture found at: http://en.wikipedia.org/wiki/File:Earthlights_dmsp.jpg

As well as the Universe

picture found at: http://www.universetoday.com/30168/galaxies/

wastefulexcessive

obstructive

picture found at: http://commons.wikimedia.org/wiki/File:Lightmatter_la_at_night_001.jpg.

"The importance of sleep cannot be

overestimated in the maintenance of a healthy body."     -Harvard Women's Health Watch Picture found at: http://www.flickr.com/photos/kris10lprs/3001891736/

Nocturnal Animals

picture found at: http://www.flickr.com/photos/mskelton51/3816540350/

"Human light spills into the natural world, some aspect of life—migration, reproduction, feeding—is affected." -National Geographic  

Picture found at: http://ngm.nationalgeographic.com/2008/11/light-pollution/klinkenborg-text

Depression

picture found at: http://www.topnews.in/health/mice-study-finds-link-between-depression-and-inflammatory-response-29828

"People who are working while others are stargazing may face the greatest risks. Hormonal disturbances triggered by nighttime exposure to white or bluish light can disrupt circadian rhythms and fuel the growth of tumors, experiments show." -Ben Hader, US News Science

picture found at: http://www.usnews.com/usnews/photography/light_pollution/bigpicture.php?image=7&s_cid=7

               Before                                  After

For an hour on March 31, 2007, people in Sydney, Australia, turned off many of their lights.

pictures found at: http://www.usnews.com/usnews/photography/light_pollution/bigpicture.php?image=3&s_cid=3, http://www.usnews.com/usnews/photography/light_pollution/bigpicture.php?image=4&s_cid=4

And Solutions...

pictures found at: http://en.wikipedia.org/wiki/File:Earth-Hour-Logo.jpg, http://science.howstuffworks.com/environmental/green-science/light-pollution3.htm

Works CitedAstronomers and amateur stargazers need dark skies to see the heavens. Digital image. U.S. News & World Report. Web. 21 Nov. 2011. http://www.usnews.com/usnews/photography/light_pollution/bigpicture.php?image=7&s_cid=7.Cain, Fraser. Spiral Galaxy NGC 3982. Digital image. Universe Today. 30 Apr. 2009. Web. 21 Nov. 2011. <http://www.universetoday.com/30168/galaxies/>.Christopher Backing. "Light At Night Is Dangerous To Health." Medical News Today. MediLexicon, Intl., 29 Jan. 2007. Web. 17 Nov. 2011.Earth Hour Logo. Digital image. Wikimedia Commons. Wikipedia, 11 Mar. 2008. Web. 21 Nov. 2011. http://en.wikipedia.org/wiki/File:Earth-Hour-Logo.jpg.Harder, Ben. "Light Pollution: Night Skies, Dark No More - US News and World Report." US News & World Report | News & Rankings | Best Colleges, Best Hospitals, and More. National Science Foundation, 14 Mar. 2008. Web. 21 Nov. 2011."Light Pollution - The Solution." Astronomical Society of South Australia. Astronomical Society of South Australia. Web. 21 Nov. 2011.Locher, John. Light fixtures like this one focus the light where it's needed. Digital image.How Stuff Works. Web. 21 Nov. 2011. <http://science.howstuffworks.com/environmental/green-science/light-pollution3.htm>.Logan, Aaron. Lightmatter LA at Night. Digital image. Wikimedia Commons. Wikipedia. Web. 19 Nov. 2011. <http://commons.wikimedia.org/wiki/File:Lightmatter_la_at_night_001.jpg>.Mayhew, Craig, and Robert Simmon. Earthlights. Digital image. Wikipedia. 23 Oct. 2000. Web. 19 Nov. 2011. <http://en.wikipedia.org/wiki/File:Earthlights_dmsp.jpg>.Richardson, Jim. Our Vanishing Night. Digital image. National Geographic. National Geographic Society, Nov. 2008. Web. 21 Nov. 2011. <http://ngm.nationalgeographic.com/2008/11/light-pollution/klinkenborg-text>.Skelton, Michael. Great Horned Owl. Digital Image. Flickr. Yahoo, 12 Aug. 2009. Web. 19 Nov. 2011. <http://www.flickr.com/photos/mskelton51/3816540350/>.

Society for Neuroscience. "Disruption Of Circadian Rhythms Affects Both Brain And Body, Mouse Study Finds."ScienceDaily, 26 Oct. 2009. Web. 17 Nov. 2011.

Stanley, Jeremy. Light Pollution Country Versus City. Digital image. Wikipedia. 6 Aug. 2007. Web. 19 Nov. 2011. http://en.wikipedia.org/wiki/File:Light_pollution_country_versus_city.png.

Sweet Silence. Digital image. Flickr. Yahoo, 19 Oct. 2008. Web. 18 Nov. 2011. http://www.flickr.com/photos/kris10lprs/3001891736/

"The Fading Milky Way." NASA Science. NASA, 1 Nov. 2001. Web. 21 Nov. 2011. Toothman, Jessika. "HowStuffWorks "The Solution to Light Pollution"" HowStuffWorks "Science"

31 Aug. 2009. Web. 21 Nov. 2011.Turner, Grant. And after the city plunged into darkness. Digital image. U.S. News & World Report.

Web. 21 Nov. 2011. http://www.usnews.com/usnews/photography/light_pollution/bigpicture.php?image=4&s_cid=4.

Turner, Grant. People in Sydney, Australia, turned off many lights for an hour on March 31, 2007. Here's the Sydney skyline before. Digital image. U.S. News & World Report. Web. 21 Nov. 2011. http://www.usnews.com.

Works Cited (cont.)