This article is co-published with ProPublica, a nonprofit newsroom that investigates abuses of power. About 5 billion years ago, stars merged and exploded, creating uranium that eventually became ...

Most radon inspection costs range from $146 to $716, though a typical average is $420. Homeowners anticipating the cost of a radon inspection will need to consider factors such as the home size, ...

When it rains, when a low-pressure system passes by, and when water soaks the soil, it's not a great day to sample for radon. Those conditions force radon out of pore spaces and into basements. It ...

You got the radon test results back. The numbers are high—maybe 8.0 pCi/L, maybe higher. Your realtor says you need mitigation before closing. Or maybe you've lived in your Wisconsin home for years ...

ProPublica is a nonprofit newsroom that investigates abuses of power. Sign up for Dispatches, a newsletter that spotlights wrongdoing around the country, to receive our stories in your inbox every ...