The paper discusses the results of 30 years of
radon indoor entry research. While some progress has
been made, many discrepancies between current
theories and experimental data still remain.
Misconceptions of radon transport mechanisms in
homes are analyzed. The role of US Environmental
Protection Agency in radon indoor entry research is
examined and the agency's policies are criticized. The
need to include thermotranspiration gas transport in
the general model of radon indoor entry is
substantiated. Iran. J. Radiat. Res., 2008 6 (1): 1-6