Varies by geography, so yeah, by country as well. It's a major issue in the US as per the comments in this thread, but here in Australia, almost the entire coun

Varies by geography, so yeah, by country as well. It's a major issue in the US as per the comments in this thread, but here in Australia, almost the entire country[0] has indoor radon levels at 5% or less of the concern threshold level[1]. A few people near certain industries may need to be concerned, but it's not the issue it is in the US. [0] https://www.arpansa.gov.au/understanding-radiation/radiation-sources/more-radiation-sources/radon-map https://www.arpansa.gov.au/understanding-radiation/radiation... [1] https://www.arpansa.gov.au/understanding-radiation/radiation-sources/more-radiation-sources/radon https://www.arpansa.gov.au/understanding-radiation/radiation...