“What’s radon?” That question came up in a conversation recently. I suspect that the majority of North Dakotans have heard something about radon in our soils and that it is associated with lung cancer. It is definitely here, but I rarely hear mention of radon in conversations. Radon is an element. It is a colorless, odorless, and tasteless radioactive gas. It is on the periodic table of elements over on the far-right column. Its symbol is Rn, and it has an atomic number of 86. But it is the