This week we talk about radon - what it is, where it comes from, how to measure it, and how to mitigate. The State of Minnesota recently enacted a law requiring licensure for radon measurement professionals, and as a part of that licensure, Christopher has to complete several hours of continuing education a year. In this episode he shares some of the things he learned at his last class. Show notes: https://www.thehonestinspector.com/?p=1015