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 ...

SWAT Environmental reports that radon, a harmful gas linked to lung cancer, can be mitigated by testing and using techniques like active soil depressurization.

You may have heard about radon from a friend or a neighbour and have questions about what exactly it is and why it’s ...

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 ...