Part 2
What is Radon?

It is estimated that thirty-seven percent of the radiation that people are exposed to comes from radon and radon decay products. The location of greatst exposure to radon is in the home.While uranium is the source of radon, factors that influence its concentration in indoor air will include radon in soil, building materials, and groundwater. Air pressure differences between soil and home as well as foundation openings cause radon gas to flow towards the foundation of a home. Indoor radon concentrations also depend on soil permeability and porosity,uranium and moisture content and home foundations.