The National Safety Council (NSC) has the following to say:
"[National Radon Action Week] began in 1990 as a congressional resolution and now takes the form of a presidential message from the White House asking Americans to take preventive action on this health risk.The purpose of the week is to draw attention to radon as a serious public health issue and, more important, to motivate Americans to take action to protect themselves from radon health effects. This week has traditionally been highlighted by media and event blitzes that feature specific high-profile activities such as radon testing of celebrity homes, community radon test challenges, and retailer promotions, to name a few."
Reality is that I didn't see a presidential message, any sort of media "blitz", celebrity "high-profile activities", or anything else that would make National Radon Action Week different from a regular week. In fact, searching news sources brought up only three articles that mentioned it, and they were from obscure American newspapers.
What is National Radon Action Week?
Not enough.