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

January is National Radon Action Month, which means it is time to test your home for naturally occurring radioactive gas.

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

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

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

About 21,000 people die from radon-induced lung cancer every year, the EPA estimates. Radon test kits measure levels in a building over time, from days to weeks to months. The EPA recommends a ...

indicating a high or moderate potential for elevated radon levels. To determine if your home is in one of these zones, view EPA’s Map of Radon Zones for your state. Radon test kits can be bought ...

“And the only way to know if radon is in your home is to test for it.” Iowa is in Zone 1 according to the EPA. Counties in this zone are at the highest risk for above-average radon levels. Experts ...

Most already know about the $9 toll to enter Manhattan at or below 60th Street, in what's called the Congestion Relief Zone, but here's a look at exactly where drivers are and aren't being charged.

Western Washington is divided into what are called the "public zones" for forecasting. Based on this map, watches, warnings, advisories, and special weather statements are issued for areas.

So where exactly is the congestion relief zone? How does the MTA ensure you're only charged once, and what about driving on the FDR? Here are the answers to the top congestion pricing questions ...