Researchers from Harvard T.H. Chan School of Public Health have assembled a national database with millions of multi-day indoor radon measurements from 2001 to 2021. Findings reveal that nearly 25% of ...

[Perhaps} it may have a type of rock that isn’t high on uranium.” In almost 14% of homes in New York, radon levels are at or above 4 picocuries per liter. This is known as the action level.

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 reveals ...