1.
USA
Pollution Variation

2.
Air Quality (Blue: poor, White: good)

3.
S02 emissions

4.
C02 emissions

5.
light pollution

6.
http://www.npr.org/news/graphics/2009/jun/county-cancer/

7.
Boston: 5th highest deaths from diesel pollution
Detroit: ‘Motown’ famous for car manufacture
Pittsburg: Steel town
Philadelphia: home of US chemical companies
Sunbelt: 88% of US population growth 2000-2030
Silicon Valley, San Francisco: home to US ICT industries
California: green energy policy includes cutting 2020 GHG
emissions to 1990 levels
Power plant emissions lead to 38,000 heart attacks a year

8.
Add these cities:
New York
Boston
Detroit
Pittsburg
Philidelphia
San Francisco
Los Angeles
Phoenix