Radon is the primary component of natural background radiation. It's an alpha emitter. https://www.epa.gov/radiation/radiation-sources-and-doses https://www.ep

Radon is the primary component of natural background radiation. It's an alpha emitter. https://www.epa.gov/radiation/radiation-sources-and-doses https://www.epa.gov/radiation/radiation-sources-and-doses https://en.wikipedia.org/wiki/Radon https://en.wikipedia.org/wiki/Radon