Radon gas is the second leading cause of lung cancer in the United States. Responsible for as many as 20,000 lung cancer deaths each year, according to the EPA and Surgeon General’s Office, radon is a radioactive gas that can infect our homes and living environment undetected. If this is the first time you’ve heard of radon gas, you aren’t alone. Despite being the second leading cause of lung cancer in the U.S., the dangers of radon gas exposure are not commonly known. The good news is you’re here now, and we’ve compiled a concise list of the most important…