25
50
75
62
7%
15%
30%
42%
12.1 million
19.4 million
26.7 million
51.3 million
2010
2012
2014
2016
The Fox River
The Cuyahoga River
The Scioto River
The Calumet river
Evaporative emissions control
Exhaust gas recirculation (EGR)
Secondary air injection
Catalytic converters
1972
1985
1994
2009
Paint
Corian
Drywall
Asbestos
20%
80%
30%
50%
The Clean Air Act Extension
The creation of the EPA
The Clean Water Act
Russia
China
The United States
Canada
Russia
China
Saudi Arabia
The United States
Alaska
Massachusetts
California
Maine
1982
1966
2003
1970
Peace activist John McConnell
Wisconsin Senator Gaylord Nelson
Vice President Al Gore
New York City Mayor John Lindsay