radon

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radon

Colorless, odorless gas that occurs naturally due to the breakdown of minerals in the earth. It tends to become trapped in our modern, nearly air-tight homes. Since there has been some correlation between radon and lung cancer, the EPA recommends levels no higher than 4 picocuries per liter (pCi/L), although generally acceptable levels are in the range of 4 to 8 pCi/L. The EPA Web site at www.epa.gov has information on testing for radon and reducing it.

References in periodicals archive ?
A full description of the Vee map is beyond the scope of this paper, for further understanding of the Vee map in detail please refer to Thoron and Myers (2010b).
Like Chagall's mural," Thoron has written, "the play's structure is composed of multiple narratives and images woven together in a dreamlike way.