Rivera, A. (2011). "Businesses in your area, why don't they turn off?" Unpublished manuscript.
Essay by former Cleveland Metroparks Zoo employee Antoinette Rivera. 11 pages.
"Have you ever driven the highway at night or have been out to the country and wonder why you can see so many stars but once you drive into an area with lights the sky turns purplish pink? This study covers light pollution and it's effects on wildlife."