Map from the paper showing the spatial distributions of predicted radon concentrations at screening floor in winter. L. Li, B.A. Coull, C.L. Zilli Vieira, P. Koutrakis, High-resolution national ...

A new map has revealed that up to 25 percent of Americans live in areas where radon levels are considered unsafe by the Environmental Protection Agency (EPA). Radon is a radioactive gas that has ...

High-resolution national radon maps based on massive indoor measurements in the United States. ... Proceedings of the National Academy of Sciences of the United States of America Published: 2025-01-14 ...

A study on data from 2001 to 2021 discovered that average radon concentration across the United States was estimated at 53.3 Bq/m3, and established five radon zones based on the averages in ...

Radon is all around us, but exposure to high levels can prove detrimental. ... The map of radon zones, developed in 1993, doesn’t show areas where radon is or isn’t in homes, ...

DHEC map shows average radon levels are higher in the Upstate than other parts of South Carolina. DHEC recommends people test their homes every three years ...

According to a new paper in the journal PNAS, over 83 million people across the U.S. live in residences with radon levels over 148 Becquerels per cubic meter (Bq/m 3).. The researchers' map ...