Radon enters buildings through cracks and joints. This can lead to increased radon concentrations indoors, and indoor radon is the second most common cause of lung cancer. Geology and construction methods determine the radon concentration in the building; the actual concentration can only be determined by measurement.
Our experts at the Radon Centre have compiled the most important information at a glance in an information sheet, which can be downloaded here.
The European Radon Association (ERA) has designated 7 November - the birthday of two-time Nobel Prize winner Marie Curie - as European Radon Day to raise awareness of the fact that radon can pose a health risk.