Over 83 million people around the U.S. live in residences with radon levels over the EPA's action level, new data reveals.

Researchers from Harvard T.H. Chan School of Public Health have assembled a national database with millions of multi-day ...

A new map has revealed that up to 25 percent of Americans live in areas where radon levels are considered unsafe by the ...

Over time, breathing in high levels of radon can cause lung cancer. Zone 5, whose average is above the danger level stated by the EPA, includes most of South Dakota, North Dakota, Nebraska ...

You can find that map below. Average indoor levels of radon in U.S. homes is about 1.3 pCi/L (picocuries per liter). While there is not a safe level of exposure to radon, the EPA recommends homes ...

You can find that map below. Average indoor levels of radon in U.S. homes is about 1.3 pCi/L (picocuries per liter). While there is not a safe level of exposure to radon, the EPA recommends homes be ...