Adams, E. E. (2012, August 31). Forrest Covers. Eco-Economy Indicators - Forest Cover | EPI. Retrieved May 19, 2014, from http://www.earth-policy.org/indicators/C56/
"Air Pollution Information." Air Team. N.p., n.d. Web. 16 May 2014. <http://www.epa.state.il.us/air/vim/>.
American Forests. (n.d.). American Forests. Retrieved May 19, 2014, from http://www.americanforests.org/discover-forests/forest-facts/
Autoboblies. (n.d.). . Retrieved May 10, 2014, from http://www.history.com/topics/automobiles
Who invented the automobile? (Who invented the automobile? (Everyday Mysteries: Fun Science Facts from the Library of Congress)) http://www.loc.gov/rr/scitech/mysteries/auto.html
Buying Guide - Car Environmental Impact - National Geographic's Green Guide (National Geographic)
http://environment.nationalgeographic.com/environment/green-guide/buying-guides/car/environmental-impact/ Retrieved May 2, 2014 Forest Facts |
Fuel Economy Guide . (2013, January 1). . Retrieved May 16, 2014, from http://www.fueleconomy.gov/feg/pdfs/guides/FEG2013.pd
The Reader’s Companion to American History. Eric Foner and John A. Garraty, Editors. Copyright © 1991 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
John C. Briggs Coal Makes Electric Cars Bad? No, Plug-Ins Show Coal As Bad (Green Car Reports)
http://www.greencarreports.com/news/1086927_coal-makes-electric-cars-bad-no-plug-ins-show-coal-as-worsehttp://www.greencarreports.com/news/1086927_coal-makes-electric-cars-bad-no-plug-ins-show-coal-as-worse
The asphalt's getting crowded. (n.d.). Americans drive twice as much, spend twice as much time in traffic than they did in 1980.. Retrieved May 16, 2014, from http://www.facethefactsusa.org/facts/the-asphalts-getting-crowded-video-
Timeline: History of the Electric Ca. (2009, October 30). PBS. Retrieved May 16, 2014, from http://www.pbs.org/now/shows/223/electric-car-timeline.html (n.d.). PBS. Retrieved May 12, 2014, from http://www.pbs.org/now/shows/223/electric-car-timeline.html