Radon (Rn) in Alberta – A bad news/good news story! Radon gas is the number one cause of lung cancer in non smokers in Alberta!  The good news is that you can do something about it.  Do it for your kids! Radon is a colorless odourless gas that is radioactive with a half-life of 3.8 days. This decay process is what makes it dangerous. There is a lot of information available if you Google it: ...