Washington Post 3-6-2009. Link to article: http://www.washingtonpost.com/wp-dyn/content/article/2009/03/05/AR2009030503293.html
Los Angles Times 3-6-2009. Link to article: http://www.latimes.com/news/science/environment/la-na-emissions6-2009mar06,0,2898775.story
San Francisco Chronicle 3-6-2009. Link to article: http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2009/03/06/MN6K16A0RR.DTL
San Francisco Chronicle 3-6-2009. Link to article: http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2009/03/06/BUE016A63B.DTL
Washington Post 3-4-2009. Link to article: http://www.washingtonpost.com/wp-dyn/content/article/2009/03/03/AR2009030303735.html