Don asks: Our house measures just over the EPA limit for radon. Is this something we should be concerned about or are the risks overblown? How effective are radon mitigation systems and what do they cost? Steve Bliss, of BuildingAdvisor.com, responds: While radon stories rarely appear in the news anymore, the health risk from exposure to high levels is real and significant. … [Read more...] about Is Radon Mitigation Worth the Cost?