ɹˈeɪdɑːn ɛɡzˈɔːsts nˈætʃɚɹəli fɹʌmðə ɡɹˈaʊnd, pɚtˈɪkjʊlɚli ɪn sˈɜːʔn̩ ɹˈiːdʒənz, ɪspˈɛʃəli bˌʌt nˌɑːt ˈoʊnli ɹˈiːdʒənz wɪð ɡɹænˈɪɾɪk sˈɔɪlz.
Radon exhausts naturally from the ground, particularly in certain regions, especially but not only regions with granitic soils.