Colorado has high levels of radon, which can cause lung cancer

Colorado has high levels of radon, which can cause lung cancer

A residential development in Erie. (Getty Images)This commentary was originally published by The Conversation. In Colorado, as of 2025, about 500 people a year die from lung cancer as the result of radon gas exposure. Nationally, the number of lung cancer deaths attributed to radon is about 21,000 per year. Radon is present nearly everywhere outdoors, yet typically at levels that are not harmful. It becomes dangerous when it gets trapped and acc…