Geologic, seasonal, and atmospheric predictors of indoor home radon values.

Exposure to tobacco smoke and radon cause lung cancer. Radioactive decay of naturally occurring uranium in bedrock produces radon. Seasonality, bedrock type, age of home, and topography have been associated with indoor radon, but the research is mixed.

A Geologically Based Indoor-Radon Potential Map of Kentucky.

We combined 71,930 short-term (median duration 4 days) home radon test results with 1:24,000-scale bedrock geologic map coverage of Kentucky to produce a statewide geologically based indoor-radon potential map. The test results were positively skewed with a mean of 266 Bq/m, median of 122 Bq/m, and 75th percentile of 289 Bq/m. We identified 106 formations with ≥10 test results.