Click on the image to access the interactive maps to visualize county level analysis.
The Environmental Protection Agency has estimated the cancer risk posed by air pollution across U.S. counties. Hovering over a county will tell you the EPA's estimate of how many additional cancer deaths per million people would be expected from air pollution in that county. Use the dropdown list on the right to zoom to a particular state to find your county. The agency's risk estimates are based on data collected in 2002 and assume a lifetime of exposure to the pollutants. The average risk across the country is 36 additional deaths per million people.
Also read the NPR article on the database.
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