Time Magazine has put together a picture showing US population density. 80% of the US live in metropolitian areas. Notice the great emptiness in Nevada. Can you say, "nuclear test site?" I knew you could.
In other charts, we have the cancer survival rates. Basically lists a bunch of cancers and shows the percentage of people that have survived 5, 10, 15 and 20 years with the diagnosis.
Now if we could create a chart that shows population density, cancer survival rates by region, and incidents of cancer by region, I think I could decide where to move.