Chris Madden copy right Original Artist....This image is attributed to Chris Madden © 2004, Orignal Artist

EPA.” Common Pollutants. 2000 . photograph

PRIMARY AIR QUALITY STANDARDS

NASA Goddard Space Flight Center,"Carbon Monoxide Pollution over the United States and Canada" June 10, 2011 via Flicker, Creative Commons Attribution

SECONDARY STANDARDS

Ian Armstrong, " Sydney dust strom" October 2, 2009 via Flickr, Creative Commons Attribution

STAITANARY SOURCES

Woldgang Schegl,"Pumping it out" January 1, 2007 via Flickr, Creative Commons Attribution

MOBILE SOURCES

World Learning," Pollution in Mexico City" March 18, 2006 via Flickr, Creative Commons Attribution

World Learning," Pollution in Mexico City" March 18, 2006 via Flickr, Creative Commons Attribution

NATURAL SOURCES

Air Pollution Pathways. September 12, 2008 via Wordpress

HEALTH EFFECTS

Horton. Indoor Air Pollution. 2008. Photograph. How Stuff Works. Web.

AIR AND THE ENVIORNMENT

Stone, Les. Coal Pollution. 2007. Photograph. Airship Highlights Coal Pollution. Green Peace. Web.

ACID RAIN

Alderman, Fielding. Acid Rain. 2004. Photograph. Acid Rain. Tripod. Web.

GROUND LEVEL OZONE

Roger Price, "Ozone hole" May 31, 2009 via Flicker, Creative Commons Attribution

CLIMATE CHANGE

Feather. Melting Polar Ice Caps. 2012. Photograph. Melting Polar Ice Caps. WordPress. Web.

AIR and the ECONOMY

Nyier, Abdu. Hillsboro Farm. 2011. Photograph. The Jersey Journal.

EPA. Clean Air Act. 1990. Photograph

CHANGE

EPA. Go Green. 2005. Photograph.

WIND POWER

Alamy. Wind Farms. 2012. Photograph. Wind Farms Can Cause Climate Change, Finds New Study. The Telegraph. Web.

Dawn Ellner, "Clepsydra Geyser" August 3,2010 via Flickr, Creative Commons Attribution

U.S National Parks, “Rockies”. 2004