The researchers' map reveals the geographical distribution ... by the radioactive decay of Uranium-238 in the soil. When radon gas is inhaled, its radioactive particles can damage lung tissue ...

where it concentrates and then begins the journey up again as radon gas. Much of the low radon map overlays well with traditional flood zones, in part because basements are rare in these areas ...

The bad: A map developed by the Department of Health ... which is a unit that measures levels of radon/radiocactive gas. If your number is about 4 pCI/L, you will be advised to fix your house.

Radon is an odorless, colorless, gas that occurs naturally in Minnesota ... MDH created the new interactive county radon maps and charts using five years of data from 2010-2014 with more than ...