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</html><description>Radon is een aardgas dat ontstaat bij de radioactieve ontbinding van uranium dat aanwezig is in water, bodem en gesteenten. Buiten is het in minimale concentraties aanwezig, hoewel het in slecht geventileerde ruimtes zoals mijnen en huizen zich in grote hoeveelheden kan ophopen, waardoor het risico op longkanker toeneemt. Bovendien bestaat het uit unieke features ... Lees verder</description></oembed>
