Citations

Graph: http://presentdiscontent.files.wordpress.com/2009/12/easterbrook-global-cooling-graph.jpg

Sources:
Living in the Environment:Principles,Connections, and Solutions, 14th Ed. G. Tyler Miller, Jr

"Global CO2 emissions: increase continued in 2007". Environmental Protection Agency. 2/2/10 http://www.pbl.nl/en/publications/2008/GlobalCO2emissionsthrough2007.html.

"Data base". Buerau of Labor Statistacs . 2/2/10 <http://data.bls.gov/cgi-bin/surveymost>.