> that's true of ordinary soil and all kinds of things. Sure. If I remember right, someone who lives in Denver gets about double the average radiation dose be

> that's true of ordinary soil and all kinds of things. Sure. If I remember right, someone who lives in Denver gets about double the average radiation dose because a) there are a lot of radionuclides in the Rocky Mountains (relative to other places) and b) Denver's altitude means that more cosmic rays reach ground level because there's less atmosphere to form a shield. If you told most people that (insert some activity) was going to double their radiation dose, they would freak, yet no one panics over the idea of living in Denver.