Pitt and Duquesne University researchers found radium downstream of wastewater treatment plants that treat runoff from landfills that accept frack waste.
Researchers found elevated levels of radioactivity on air particles measured downwind of fracking sites around the country. They say health effects are possible, though not imminent.
A conversation with the journalist who wrote the Rolling Stone article based on his two-year investigation into the industry, worker safety and the regulatory blackhole that leaves people at risk.
Spreading oil and gas wastewater has been a cheap way for municipalities to suppress dust on unpaved roads in parts of Pennsylvania for years. But the waste can contain high levels of radioactive materials and other pollutants that are bad for water quality and human health.