That doesn't talk about an increase in radiation. If there was an issue, we would see it in flight crew. There is also a difference with altitude and soil composition, and that would show up in the data.
That link suggests nothing of the sort. That aside, I’ve been tracking background radiation for years with my own sensors (for other reasons). I can’t replicate this claim there either, as expected.
This suggests otherwise, https://radwatch.berkeley.edu/background-radiation/ Another exposure increase is from increased home insulation likely increases radon exposure.
That doesn't talk about an increase in radiation. If there was an issue, we would see it in flight crew. There is also a difference with altitude and soil composition, and that would show up in the data.
That link suggests nothing of the sort. That aside, I’ve been tracking background radiation for years with my own sensors (for other reasons). I can’t replicate this claim there either, as expected.