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![Photo of houses in a neighborhood](/sites/cdphe/files/styles/image_card/public/GettyImages-1337285643-cropped.jpg)
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Radon is the leading cause of lung cancer among non-smokers in the United States and is responsible for approximately 500 lung cancer deaths annually in Colorado. It is a naturally occurring radioactive gas that comes from the breakdown of uranium in the soil that can enter your home from the soil beneath it.
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![Poster contest winner, drawn by sixth grader, reading, "Radon: Get your home tested today. Kill radon before it kills you. SILENT KILLER"](/sites/cdphe/files/styles/image_card/public/fight_radon_0.png)
2024 Colorado Radon Poster Contest First Place Winner, Bayleigh, Age 11, Windsor Middle School
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Thirty-second informational videos on radon
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