ValnaoTIL Radon is a radioactive substance that causes cancer. Colorado is full of Radon.
Michigan has the highest incidence of radon in basements I’ve always heard tell. It’s from trace amounts of uranium in the ground, and it emanates from that, and michigan has a lot from being on the glacial plane, some radioactive rock must have gotten crushed and pulverised and dragged, as the Laurentidide glacier melted and grinded, 10,000 feet high, big enough to make it’s own weather, the state was right in the meaty pat of it.
That just sent me on a lovely rabbit hole learning about the glacier. So cool!!
The great lakes region is really cool! I recommend people check it out if they can, though if you aren’t from the US you should stick to the Canadian side at the moment unfortunately (not that it’s any worse, but the whole region is cool).