I'm vaguely aware that radon testing is one of the things you should do when buying a house, but it's never really come up as an actual problem for anyone I kno

I'm vaguely aware that radon testing is one of the things you should do when buying a house, but it's never really come up as an actual problem for anyone I know. My indoor air sensor claims that my apartment averages 0.6 (pCi/l), so it's very far from being an issue.