https://www.propublica.org/article/toxmap-poison-in-the-air
I'm not sure if this is the right spot, but I thought this article was interesting given Paul's strong feeling that cancer is from excess toxins
“These fence line communities are sacrifice zones,” said Jane Williams, executive director of California Communities Against Toxics. “Before there was climate denial, there was cancer denial. We release millions of pounds of carcinogens into our air, water and food and act mystified when people start getting sick.”
and
The cancer risks from industrial pollution can be compounded by factors like age, diet, genetic predisposition and exposure to radiation; the knock-on effect of inhaling toxic air for decades might, for example, mean the difference between merely having a family history of breast cancer and actually developing the disease yourself. While the cancer and asthma rates in Houston’s Harris County are comparable with those in the rest of the state, Texas officials have identified cancer clusters in several of the city’s neighborhoods.
Large swaths of the Greater Houston area make up the third-biggest hot spot of cancer-causing air in the country, according to our analysis, after Louisiana’s Cancer Alley and an area around Port Arthur, Texas, which is on the Louisiana border. For many homes closest to the fence lines of petrochemical plants in cities like La Porte and Port Neches, Texas, the estimated excess risk of cancer ranges from three to six times the level that the EPA considers acceptable.
Anyway, the whole article is interesting, and here's a link to the map:
https://projects.propublica.org/toxmap/ 
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